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Finding the Fourth Proportional to 113,142.78, 169,785.62 and 63,255.60

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Solution

The fourth proportional to 113,142.78, 169,785.62 and 63,255.60 is: 94,923.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,142.78 : 169,785.62 = 63,255.60 : x
  2. Step 2: Convert to fraction form
    113,142.78/169,785.62 = 63,255.60/x
  3. Step 3: Cross multiply
    113,142.78x = 169,785.62 × 63,255.60
  4. Step 4: Simplify right side
    113,142.78x = 10,739,890,948.19
  5. Step 5: Solve for x
    x = 10,739,890,948.19/113,142.78
  6. Step 6: Final answer
    x = 94,923.34

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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.