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Finding the Fourth Proportional to 74,788.62, 112,024.71 and 60,495.72

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Solution

The fourth proportional to 74,788.62, 112,024.71 and 60,495.72 is: 90,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,788.62 : 112,024.71 = 60,495.72 : x
  2. Step 2: Convert to fraction form
    74,788.62/112,024.71 = 60,495.72/x
  3. Step 3: Cross multiply
    74,788.62x = 112,024.71 × 60,495.72
  4. Step 4: Simplify right side
    74,788.62x = 6,777,015,489.24
  5. Step 5: Solve for x
    x = 6,777,015,489.24/74,788.62
  6. Step 6: Final answer
    x = 90,615.60

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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.