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Finding the Fourth Proportional to 338,562.15, 507,909.61 and 125,331.71

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Solution

The fourth proportional to 338,562.15, 507,909.61 and 125,331.71 is: 188,022.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,562.15 : 507,909.61 = 125,331.71 : x
  2. Step 2: Convert to fraction form
    338,562.15/507,909.61 = 125,331.71/x
  3. Step 3: Cross multiply
    338,562.15x = 507,909.61 × 125,331.71
  4. Step 4: Simplify right side
    338,562.15x = 63,657,177,093.86
  5. Step 5: Solve for x
    x = 63,657,177,093.86/338,562.15
  6. Step 6: Final answer
    x = 188,022.13

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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.