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Finding the Fourth Proportional to 107,838.69, 148,817.98 and 62,543.53

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Solution

The fourth proportional to 107,838.69, 148,817.98 and 62,543.53 is: 86,310.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,838.69 : 148,817.98 = 62,543.53 : x
  2. Step 2: Convert to fraction form
    107,838.69/148,817.98 = 62,543.53/x
  3. Step 3: Cross multiply
    107,838.69x = 148,817.98 × 62,543.53
  4. Step 4: Simplify right side
    107,838.69x = 9,307,601,796.67
  5. Step 5: Solve for x
    x = 9,307,601,796.67/107,838.69
  6. Step 6: Final answer
    x = 86,310.41

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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.