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Finding the Fourth Proportional to 103,517.60, 155,276.40 and 96,956.60

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Solution

The fourth proportional to 103,517.60, 155,276.40 and 96,956.60 is: 145,434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,517.60 : 155,276.40 = 96,956.60 : x
  2. Step 2: Convert to fraction form
    103,517.60/155,276.40 = 96,956.60/x
  3. Step 3: Cross multiply
    103,517.60x = 155,276.40 × 96,956.60
  4. Step 4: Simplify right side
    103,517.60x = 15,055,071,804.24
  5. Step 5: Solve for x
    x = 15,055,071,804.24/103,517.60
  6. Step 6: Final answer
    x = 145,434.90

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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.