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Finding the Fourth Proportional to 651,633.20, 977,449.80 and 629,860.40

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Solution

The fourth proportional to 651,633.20, 977,449.80 and 629,860.40 is: 944,790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,633.20 : 977,449.80 = 629,860.40 : x
  2. Step 2: Convert to fraction form
    651,633.20/977,449.80 = 629,860.40/x
  3. Step 3: Cross multiply
    651,633.20x = 977,449.80 × 629,860.40
  4. Step 4: Simplify right side
    651,633.20x = 615,656,922,007.92
  5. Step 5: Solve for x
    x = 615,656,922,007.92/651,633.20
  6. Step 6: Final answer
    x = 944,790.60

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Half scale
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Double scale
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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.