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Finding the Fourth Proportional to 92,446.90, 138,645.84 and 42,501.48

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Solution

The fourth proportional to 92,446.90, 138,645.84 and 42,501.48 is: 63,740.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,446.90 : 138,645.84 = 42,501.48 : x
  2. Step 2: Convert to fraction form
    92,446.90/138,645.84 = 42,501.48/x
  3. Step 3: Cross multiply
    92,446.90x = 138,645.84 × 42,501.48
  4. Step 4: Simplify right side
    92,446.90x = 5,892,653,395.84
  5. Step 5: Solve for x
    x = 5,892,653,395.84/92,446.90
  6. Step 6: Final answer
    x = 63,740.95

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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.