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Finding the Fourth Proportional to 56,432.80, 84,844.40 and 52,778.40

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Solution

The fourth proportional to 56,432.80, 84,844.40 and 52,778.40 is: 79,350.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,432.80 : 84,844.40 = 52,778.40 : x
  2. Step 2: Convert to fraction form
    56,432.80/84,844.40 = 52,778.40/x
  3. Step 3: Cross multiply
    56,432.80x = 84,844.40 × 52,778.40
  4. Step 4: Simplify right side
    56,432.80x = 4,477,951,680.96
  5. Step 5: Solve for x
    x = 4,477,951,680.96/56,432.80
  6. Step 6: Final answer
    x = 79,350.16

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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.