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Finding the Fourth Proportional to 107,838.64, 148,817.91 and 62,543.48

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Solution

The fourth proportional to 107,838.64, 148,817.91 and 62,543.48 is: 86,310.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,838.64 : 148,817.91 = 62,543.48 : x
  2. Step 2: Convert to fraction form
    107,838.64/148,817.91 = 62,543.48/x
  3. Step 3: Cross multiply
    107,838.64x = 148,817.91 × 62,543.48
  4. Step 4: Simplify right side
    107,838.64x = 9,307,589,791.70
  5. Step 5: Solve for x
    x = 9,307,589,791.70/107,838.64
  6. Step 6: Final answer
    x = 86,310.34

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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.