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Finding the Fourth Proportional to 57,778.48, 79,657.20 and 45,881.20

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Solution

The fourth proportional to 57,778.48, 79,657.20 and 45,881.20 is: 63,254.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,778.48 : 79,657.20 = 45,881.20 : x
  2. Step 2: Convert to fraction form
    57,778.48/79,657.20 = 45,881.20/x
  3. Step 3: Cross multiply
    57,778.48x = 79,657.20 × 45,881.20
  4. Step 4: Simplify right side
    57,778.48x = 3,654,767,924.64
  5. Step 5: Solve for x
    x = 3,654,767,924.64/57,778.48
  6. Step 6: Final answer
    x = 63,254.83

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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.