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Finding the Fourth Proportional to 629,961,973.60, 944,942,960.40 and 353,329,218.40

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Solution

The fourth proportional to 629,961,973.60, 944,942,960.40 and 353,329,218.40 is: 529,993,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,961,973.60 : 944,942,960.40 = 353,329,218.40 : x
  2. Step 2: Convert to fraction form
    629,961,973.60/944,942,960.40 = 353,329,218.40/x
  3. Step 3: Cross multiply
    629,961,973.60x = 944,942,960.40 × 353,329,218.40
  4. Step 4: Simplify right side
    629,961,973.60x = 333,875,957,630,714,112
  5. Step 5: Solve for x
    x = 333,875,957,630,714,112/629,961,973.60
  6. Step 6: Final answer
    x = 529,993,827.60

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Double scale
Find fourth proportional to 629,961,974.60, 944,942,961.90 and 353,329,219.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.