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Finding the Fourth Proportional to 75,211.76, 112,820.76 and 62,039.60

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Solution

The fourth proportional to 75,211.76, 112,820.76 and 62,039.60 is: 93,061.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,211.76 : 112,820.76 = 62,039.60 : x
  2. Step 2: Convert to fraction form
    75,211.76/112,820.76 = 62,039.60/x
  3. Step 3: Cross multiply
    75,211.76x = 112,820.76 × 62,039.60
  4. Step 4: Simplify right side
    75,211.76x = 6,999,354,822.10
  5. Step 5: Solve for x
    x = 6,999,354,822.10/75,211.76
  6. Step 6: Final answer
    x = 93,061.97

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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.