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Finding the Fourth Proportional to 134,258.80, 185,231 and 83,253.20

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Solution

The fourth proportional to 134,258.80, 185,231 and 83,253.20 is: 114,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,258.80 : 185,231 = 83,253.20 : x
  2. Step 2: Convert to fraction form
    134,258.80/185,231 = 83,253.20/x
  3. Step 3: Cross multiply
    134,258.80x = 185,231 × 83,253.20
  4. Step 4: Simplify right side
    134,258.80x = 15,421,073,489.20
  5. Step 5: Solve for x
    x = 15,421,073,489.20/134,258.80
  6. Step 6: Final answer
    x = 114,860.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.