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Finding the Fourth Proportional to 113,793.60, 170,690.40 and 71,803.20

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Solution

The fourth proportional to 113,793.60, 170,690.40 and 71,803.20 is: 107,704.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,793.60 : 170,690.40 = 71,803.20 : x
  2. Step 2: Convert to fraction form
    113,793.60/170,690.40 = 71,803.20/x
  3. Step 3: Cross multiply
    113,793.60x = 170,690.40 × 71,803.20
  4. Step 4: Simplify right side
    113,793.60x = 12,256,116,929.28
  5. Step 5: Solve for x
    x = 12,256,116,929.28/113,793.60
  6. Step 6: Final answer
    x = 107,704.80

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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.