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Finding the Fourth Proportional to 113,067.60, 169,601.40 and 99,243.60

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Solution

The fourth proportional to 113,067.60, 169,601.40 and 99,243.60 is: 148,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,067.60 : 169,601.40 = 99,243.60 : x
  2. Step 2: Convert to fraction form
    113,067.60/169,601.40 = 99,243.60/x
  3. Step 3: Cross multiply
    113,067.60x = 169,601.40 × 99,243.60
  4. Step 4: Simplify right side
    113,067.60x = 16,831,853,501.04
  5. Step 5: Solve for x
    x = 16,831,853,501.04/113,067.60
  6. Step 6: Final answer
    x = 148,865.40

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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.