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Finding the Fourth Proportional to 619,164,081.20, 928,746,121.80 and 571,812,688.10

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Solution

The fourth proportional to 619,164,081.20, 928,746,121.80 and 571,812,688.10 is: 857,719,032.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,164,081.20 : 928,746,121.80 = 571,812,688.10 : x
  2. Step 2: Convert to fraction form
    619,164,081.20/928,746,121.80 = 571,812,688.10/x
  3. Step 3: Cross multiply
    619,164,081.20x = 928,746,121.80 × 571,812,688.10
  4. Step 4: Simplify right side
    619,164,081.20x = 531,068,816,468,908,032
  5. Step 5: Solve for x
    x = 531,068,816,468,908,032/619,164,081.20
  6. Step 6: Final answer
    x = 857,719,032.15

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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.