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Finding the Fourth Proportional to 92,706.96, 138,949.20 and 42,718.44

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Solution

The fourth proportional to 92,706.96, 138,949.20 and 42,718.44 is: 64,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,706.96 : 138,949.20 = 42,718.44 : x
  2. Step 2: Convert to fraction form
    92,706.96/138,949.20 = 42,718.44/x
  3. Step 3: Cross multiply
    92,706.96x = 138,949.20 × 42,718.44
  4. Step 4: Simplify right side
    92,706.96x = 5,935,693,063.25
  5. Step 5: Solve for x
    x = 5,935,693,063.25/92,706.96
  6. Step 6: Final answer
    x = 64,026.40

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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.