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Finding the Fourth Proportional to 655,608,700.80, 983,413,051.20 and 329,091,350.40

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Solution

The fourth proportional to 655,608,700.80, 983,413,051.20 and 329,091,350.40 is: 493,637,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,608,700.80 : 983,413,051.20 = 329,091,350.40 : x
  2. Step 2: Convert to fraction form
    655,608,700.80/983,413,051.20 = 329,091,350.40/x
  3. Step 3: Cross multiply
    655,608,700.80x = 983,413,051.20 × 329,091,350.40
  4. Step 4: Simplify right side
    655,608,700.80x = 323,632,729,020,392,320
  5. Step 5: Solve for x
    x = 323,632,729,020,392,320/655,608,700.80
  6. Step 6: Final answer
    x = 493,637,025.60

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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.