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Finding the Fourth Proportional to 113,066.60, 169,599.90 and 68,829.80

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Solution

The fourth proportional to 113,066.60, 169,599.90 and 68,829.80 is: 103,244.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,066.60 : 169,599.90 = 68,829.80 : x
  2. Step 2: Convert to fraction form
    113,066.60/169,599.90 = 68,829.80/x
  3. Step 3: Cross multiply
    113,066.60x = 169,599.90 × 68,829.80
  4. Step 4: Simplify right side
    113,066.60x = 11,673,527,197.02
  5. Step 5: Solve for x
    x = 11,673,527,197.02/113,066.60
  6. Step 6: Final answer
    x = 103,244.70

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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.