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Finding the Fourth Proportional to 125,640.76, 188,492.06 and 62,490.79

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Solution

The fourth proportional to 125,640.76, 188,492.06 and 62,490.79 is: 93,751.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,640.76 : 188,492.06 = 62,490.79 : x
  2. Step 2: Convert to fraction form
    125,640.76/188,492.06 = 62,490.79/x
  3. Step 3: Cross multiply
    125,640.76x = 188,492.06 × 62,490.79
  4. Step 4: Simplify right side
    125,640.76x = 11,779,018,129.97
  5. Step 5: Solve for x
    x = 11,779,018,129.97/125,640.76
  6. Step 6: Final answer
    x = 93,751.57

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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.