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Finding the Fourth Proportional to 72,948.35, 100,687.91 and 47,524.47

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Solution

The fourth proportional to 72,948.35, 100,687.91 and 47,524.47 is: 65,596.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,948.35 : 100,687.91 = 47,524.47 : x
  2. Step 2: Convert to fraction form
    72,948.35/100,687.91 = 47,524.47/x
  3. Step 3: Cross multiply
    72,948.35x = 100,687.91 × 47,524.47
  4. Step 4: Simplify right side
    72,948.35x = 4,785,139,776.65
  5. Step 5: Solve for x
    x = 4,785,139,776.65/72,948.35
  6. Step 6: Final answer
    x = 65,596.27

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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.