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Finding the Fourth Proportional to 71,778.03, 107,403.71 and 59,902.47

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Solution

The fourth proportional to 71,778.03, 107,403.71 and 59,902.47 is: 89,633.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,778.03 : 107,403.71 = 59,902.47 : x
  2. Step 2: Convert to fraction form
    71,778.03/107,403.71 = 59,902.47/x
  3. Step 3: Cross multiply
    71,778.03x = 107,403.71 × 59,902.47
  4. Step 4: Simplify right side
    71,778.03x = 6,433,747,216.65
  5. Step 5: Solve for x
    x = 6,433,747,216.65/71,778.03
  6. Step 6: Final answer
    x = 89,633.93

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1.5x scale

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.