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Finding the Fourth Proportional to 80,646.48, 120,956.76 and 25,242.48

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Solution

The fourth proportional to 80,646.48, 120,956.76 and 25,242.48 is: 37,859.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,646.48 : 120,956.76 = 25,242.48 : x
  2. Step 2: Convert to fraction form
    80,646.48/120,956.76 = 25,242.48/x
  3. Step 3: Cross multiply
    80,646.48x = 120,956.76 × 25,242.48
  4. Step 4: Simplify right side
    80,646.48x = 3,053,248,595.16
  5. Step 5: Solve for x
    x = 3,053,248,595.16/80,646.48
  6. Step 6: Final answer
    x = 37,859.66

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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.