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Finding the Fourth Proportional to 70,141.72, 105,237.18 and 36,391.52

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Solution

The fourth proportional to 70,141.72, 105,237.18 and 36,391.52 is: 54,600.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,141.72 : 105,237.18 = 36,391.52 : x
  2. Step 2: Convert to fraction form
    70,141.72/105,237.18 = 36,391.52/x
  3. Step 3: Cross multiply
    70,141.72x = 105,237.18 × 36,391.52
  4. Step 4: Simplify right side
    70,141.72x = 3,829,740,940.71
  5. Step 5: Solve for x
    x = 3,829,740,940.71/70,141.72
  6. Step 6: Final answer
    x = 54,600.04

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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.