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Finding the Fourth Proportional to 621,812.40, 932,257.80 and 266,535.60

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Solution

The fourth proportional to 621,812.40, 932,257.80 and 266,535.60 is: 399,605.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,812.40 : 932,257.80 = 266,535.60 : x
  2. Step 2: Convert to fraction form
    621,812.40/932,257.80 = 266,535.60/x
  3. Step 3: Cross multiply
    621,812.40x = 932,257.80 × 266,535.60
  4. Step 4: Simplify right side
    621,812.40x = 248,479,892,077.68
  5. Step 5: Solve for x
    x = 248,479,892,077.68/621,812.40
  6. Step 6: Final answer
    x = 399,605.88

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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.