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Finding the Fourth Proportional to 63,019.68, 86,966.25 and 36,161.60

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Solution

The fourth proportional to 63,019.68, 86,966.25 and 36,161.60 is: 49,902.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,019.68 : 86,966.25 = 36,161.60 : x
  2. Step 2: Convert to fraction form
    63,019.68/86,966.25 = 36,161.60/x
  3. Step 3: Cross multiply
    63,019.68x = 86,966.25 × 36,161.60
  4. Step 4: Simplify right side
    63,019.68x = 3,144,838,746
  5. Step 5: Solve for x
    x = 3,144,838,746/63,019.68
  6. Step 6: Final answer
    x = 49,902.49

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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.