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Finding the Fourth Proportional to 140,077.62, 193,290.30 and 79,648.38

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Solution

The fourth proportional to 140,077.62, 193,290.30 and 79,648.38 is: 109,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,077.62 : 193,290.30 = 79,648.38 : x
  2. Step 2: Convert to fraction form
    140,077.62/193,290.30 = 79,648.38/x
  3. Step 3: Cross multiply
    140,077.62x = 193,290.30 × 79,648.38
  4. Step 4: Simplify right side
    140,077.62x = 15,395,259,264.71
  5. Step 5: Solve for x
    x = 15,395,259,264.71/140,077.62
  6. Step 6: Final answer
    x = 109,905.20

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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.