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Finding the Fourth Proportional to 2,940,689,108.40, 4,127,295,964.80 and 2,940,689,108.40

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Solution

The fourth proportional to 2,940,689,108.40, 4,127,295,964.80 and 2,940,689,108.40 is: 4,127,295,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940,689,108.40 : 4,127,295,964.80 = 2,940,689,108.40 : x
  2. Step 2: Convert to fraction form
    2,940,689,108.40/4,127,295,964.80 = 2,940,689,108.40/x
  3. Step 3: Cross multiply
    2,940,689,108.40x = 4,127,295,964.80 × 2,940,689,108.40
  4. Step 4: Simplify right side
    2,940,689,108.40x = 12,137,094,290,830,630,912
  5. Step 5: Solve for x
    x = 12,137,094,290,830,630,912/2,940,689,108.40
  6. Step 6: Final answer
    x = 4,127,295,964.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.