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Finding the Fourth Proportional to 70,382.69, 97,129.53 and 38,551.61

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Solution

The fourth proportional to 70,382.69, 97,129.53 and 38,551.61 is: 53,202.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,382.69 : 97,129.53 = 38,551.61 : x
  2. Step 2: Convert to fraction form
    70,382.69/97,129.53 = 38,551.61/x
  3. Step 3: Cross multiply
    70,382.69x = 97,129.53 × 38,551.61
  4. Step 4: Simplify right side
    70,382.69x = 3,744,500,002.87
  5. Step 5: Solve for x
    x = 3,744,500,002.87/70,382.69
  6. Step 6: Final answer
    x = 53,202.00

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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.