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Finding the Fourth Proportional to 134,453.76, 201,724.80 and 67,862.40

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Solution

The fourth proportional to 134,453.76, 201,724.80 and 67,862.40 is: 101,815.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,453.76 : 201,724.80 = 67,862.40 : x
  2. Step 2: Convert to fraction form
    134,453.76/201,724.80 = 67,862.40/x
  3. Step 3: Cross multiply
    134,453.76x = 201,724.80 × 67,862.40
  4. Step 4: Simplify right side
    134,453.76x = 13,689,529,067.52
  5. Step 5: Solve for x
    x = 13,689,529,067.52/134,453.76
  6. Step 6: Final answer
    x = 101,815.89

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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.