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Finding the Fourth Proportional to 8,695.60, 13,043.40 and 7,236.40

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Solution

The fourth proportional to 8,695.60, 13,043.40 and 7,236.40 is: 10,854.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.60 : 13,043.40 = 7,236.40 : x
  2. Step 2: Convert to fraction form
    8,695.60/13,043.40 = 7,236.40/x
  3. Step 3: Cross multiply
    8,695.60x = 13,043.40 × 7,236.40
  4. Step 4: Simplify right side
    8,695.60x = 94,387,259.76
  5. Step 5: Solve for x
    x = 94,387,259.76/8,695.60
  6. Step 6: Final answer
    x = 10,854.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.