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Finding the Fourth Proportional to 125,720.48, 188,612.72 and 36,977.12

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Solution

The fourth proportional to 125,720.48, 188,612.72 and 36,977.12 is: 55,475.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,720.48 : 188,612.72 = 36,977.12 : x
  2. Step 2: Convert to fraction form
    125,720.48/188,612.72 = 36,977.12/x
  3. Step 3: Cross multiply
    125,720.48x = 188,612.72 × 36,977.12
  4. Step 4: Simplify right side
    125,720.48x = 6,974,355,180.97
  5. Step 5: Solve for x
    x = 6,974,355,180.97/125,720.48
  6. Step 6: Final answer
    x = 55,475.09

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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.