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Finding the Fourth Proportional to 125,937.10, 188,905.65 and 88,539.40

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Solution

The fourth proportional to 125,937.10, 188,905.65 and 88,539.40 is: 132,809.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,937.10 : 188,905.65 = 88,539.40 : x
  2. Step 2: Convert to fraction form
    125,937.10/188,905.65 = 88,539.40/x
  3. Step 3: Cross multiply
    125,937.10x = 188,905.65 × 88,539.40
  4. Step 4: Simplify right side
    125,937.10x = 16,725,592,907.61
  5. Step 5: Solve for x
    x = 16,725,592,907.61/125,937.10
  6. Step 6: Final answer
    x = 132,809.10

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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.