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Finding the Fourth Proportional to 92,707.16, 138,680.02 and 74,023.72

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Solution

The fourth proportional to 92,707.16, 138,680.02 and 74,023.72 is: 110,731.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,707.16 : 138,680.02 = 74,023.72 : x
  2. Step 2: Convert to fraction form
    92,707.16/138,680.02 = 74,023.72/x
  3. Step 3: Cross multiply
    92,707.16x = 138,680.02 × 74,023.72
  4. Step 4: Simplify right side
    92,707.16x = 10,265,611,704.17
  5. Step 5: Solve for x
    x = 10,265,611,704.17/92,707.16
  6. Step 6: Final answer
    x = 110,731.60

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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.