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Finding the Fourth Proportional to 530,847.87, 732,566.31 and 289,129.71

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Solution

The fourth proportional to 530,847.87, 732,566.31 and 289,129.71 is: 398,996.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,847.87 : 732,566.31 = 289,129.71 : x
  2. Step 2: Convert to fraction form
    530,847.87/732,566.31 = 289,129.71/x
  3. Step 3: Cross multiply
    530,847.87x = 732,566.31 × 289,129.71
  4. Step 4: Simplify right side
    530,847.87x = 211,806,684,766.07
  5. Step 5: Solve for x
    x = 211,806,684,766.07/530,847.87
  6. Step 6: Final answer
    x = 398,996.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.