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Finding the Fourth Proportional to 63,159.70, 87,160.20 and 34,865.20

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Solution

The fourth proportional to 63,159.70, 87,160.20 and 34,865.20 is: 48,113.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,159.70 : 87,160.20 = 34,865.20 : x
  2. Step 2: Convert to fraction form
    63,159.70/87,160.20 = 34,865.20/x
  3. Step 3: Cross multiply
    63,159.70x = 87,160.20 × 34,865.20
  4. Step 4: Simplify right side
    63,159.70x = 3,038,857,805.04
  5. Step 5: Solve for x
    x = 3,038,857,805.04/63,159.70
  6. Step 6: Final answer
    x = 48,113.87

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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.