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Finding the Fourth Proportional to 70,581.54, 97,402.11 and 38,316.81

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Solution

The fourth proportional to 70,581.54, 97,402.11 and 38,316.81 is: 52,876.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,581.54 : 97,402.11 = 38,316.81 : x
  2. Step 2: Convert to fraction form
    70,581.54/97,402.11 = 38,316.81/x
  3. Step 3: Cross multiply
    70,581.54x = 97,402.11 × 38,316.81
  4. Step 4: Simplify right side
    70,581.54x = 3,732,138,142.47
  5. Step 5: Solve for x
    x = 3,732,138,142.47/70,581.54
  6. Step 6: Final answer
    x = 52,876.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.