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Finding the Fourth Proportional to 72,815.76, 100,377.36 and 44,502.48

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Solution

The fourth proportional to 72,815.76, 100,377.36 and 44,502.48 is: 61,347.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,815.76 : 100,377.36 = 44,502.48 : x
  2. Step 2: Convert to fraction form
    72,815.76/100,377.36 = 44,502.48/x
  3. Step 3: Cross multiply
    72,815.76x = 100,377.36 × 44,502.48
  4. Step 4: Simplify right side
    72,815.76x = 4,467,041,455.85
  5. Step 5: Solve for x
    x = 4,467,041,455.85/72,815.76
  6. Step 6: Final answer
    x = 61,347.18

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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.