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Finding the Fourth Proportional to 70,581.04, 97,401.42 and 38,316.31

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Solution

The fourth proportional to 70,581.04, 97,401.42 and 38,316.31 is: 52,876.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,581.04 : 97,401.42 = 38,316.31 : x
  2. Step 2: Convert to fraction form
    70,581.04/97,401.42 = 38,316.31/x
  3. Step 3: Cross multiply
    70,581.04x = 97,401.42 × 38,316.31
  4. Step 4: Simplify right side
    70,581.04x = 3,732,062,516.15
  5. Step 5: Solve for x
    x = 3,732,062,516.15/70,581.04
  6. Step 6: Final answer
    x = 52,876.28

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1.5x scale

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.