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Finding the Fourth Proportional to 136,925.40, 205,087.69 and 112,963.42

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Solution

The fourth proportional to 136,925.40, 205,087.69 and 112,963.42 is: 169,197.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,925.40 : 205,087.69 = 112,963.42 : x
  2. Step 2: Convert to fraction form
    136,925.40/205,087.69 = 112,963.42/x
  3. Step 3: Cross multiply
    136,925.40x = 205,087.69 × 112,963.42
  4. Step 4: Simplify right side
    136,925.40x = 23,167,406,862.30
  5. Step 5: Solve for x
    x = 23,167,406,862.30/136,925.40
  6. Step 6: Final answer
    x = 169,197.29

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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.