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Finding the Fourth Proportional to 621,867,397.65, 932,699,705.19 and 207,347,652.57

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Solution

The fourth proportional to 621,867,397.65, 932,699,705.19 and 207,347,652.57 is: 310,987,672.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,867,397.65 : 932,699,705.19 = 207,347,652.57 : x
  2. Step 2: Convert to fraction form
    621,867,397.65/932,699,705.19 = 207,347,652.57/x
  3. Step 3: Cross multiply
    621,867,397.65x = 932,699,705.19 × 207,347,652.57
  4. Step 4: Simplify right side
    621,867,397.65x = 193,393,094,422,318,720
  5. Step 5: Solve for x
    x = 193,393,094,422,318,720/621,867,397.65
  6. Step 6: Final answer
    x = 310,987,672.22

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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.