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Finding the Fourth Proportional to 125,765.94, 188,411.25 and 74,321.13

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Solution

The fourth proportional to 125,765.94, 188,411.25 and 74,321.13 is: 111,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,765.94 : 188,411.25 = 74,321.13 : x
  2. Step 2: Convert to fraction form
    125,765.94/188,411.25 = 74,321.13/x
  3. Step 3: Cross multiply
    125,765.94x = 188,411.25 × 74,321.13
  4. Step 4: Simplify right side
    125,765.94x = 14,002,937,004.71
  5. Step 5: Solve for x
    x = 14,002,937,004.71/125,765.94
  6. Step 6: Final answer
    x = 111,341.25

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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.