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Finding the Fourth Proportional to 60,579.60, 90,793.80 and 31,009.20

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Solution

The fourth proportional to 60,579.60, 90,793.80 and 31,009.20 is: 46,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,579.60 : 90,793.80 = 31,009.20 : x
  2. Step 2: Convert to fraction form
    60,579.60/90,793.80 = 31,009.20/x
  3. Step 3: Cross multiply
    60,579.60x = 90,793.80 × 31,009.20
  4. Step 4: Simplify right side
    60,579.60x = 2,815,443,102.96
  5. Step 5: Solve for x
    x = 2,815,443,102.96/60,579.60
  6. Step 6: Final answer
    x = 46,475.10

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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.