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Finding the Fourth Proportional to 134,070.72, 201,087.72 and 74,209.92

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Solution

The fourth proportional to 134,070.72, 201,087.72 and 74,209.92 is: 111,304.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,070.72 : 201,087.72 = 74,209.92 : x
  2. Step 2: Convert to fraction form
    134,070.72/201,087.72 = 74,209.92/x
  3. Step 3: Cross multiply
    134,070.72x = 201,087.72 × 74,209.92
  4. Step 4: Simplify right side
    134,070.72x = 14,922,703,614.18
  5. Step 5: Solve for x
    x = 14,922,703,614.18/134,070.72
  6. Step 6: Final answer
    x = 111,304.72

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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.