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Finding the Fourth Proportional to 123,955.58, 170,862.40 and 113,658.46

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Solution

The fourth proportional to 123,955.58, 170,862.40 and 113,658.46 is: 156,668.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,955.58 : 170,862.40 = 113,658.46 : x
  2. Step 2: Convert to fraction form
    123,955.58/170,862.40 = 113,658.46/x
  3. Step 3: Cross multiply
    123,955.58x = 170,862.40 × 113,658.46
  4. Step 4: Simplify right side
    123,955.58x = 19,419,957,255.90
  5. Step 5: Solve for x
    x = 19,419,957,255.90/123,955.58
  6. Step 6: Final answer
    x = 156,668.68

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1.5x scale

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.