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Finding the Fourth Proportional to 124,369.14, 171,629.10 and 67,780.38

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Solution

The fourth proportional to 124,369.14, 171,629.10 and 67,780.38 is: 93,536.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,369.14 : 171,629.10 = 67,780.38 : x
  2. Step 2: Convert to fraction form
    124,369.14/171,629.10 = 67,780.38/x
  3. Step 3: Cross multiply
    124,369.14x = 171,629.10 × 67,780.38
  4. Step 4: Simplify right side
    124,369.14x = 11,633,085,617.06
  5. Step 5: Solve for x
    x = 11,633,085,617.06/124,369.14
  6. Step 6: Final answer
    x = 93,536.75

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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.