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Finding the Fourth Proportional to 104,711.90, 157,067.85 and 83,975.90

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Solution

The fourth proportional to 104,711.90, 157,067.85 and 83,975.90 is: 125,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,711.90 : 157,067.85 = 83,975.90 : x
  2. Step 2: Convert to fraction form
    104,711.90/157,067.85 = 83,975.90/x
  3. Step 3: Cross multiply
    104,711.90x = 157,067.85 × 83,975.90
  4. Step 4: Simplify right side
    104,711.90x = 13,189,914,064.82
  5. Step 5: Solve for x
    x = 13,189,914,064.82/104,711.90
  6. Step 6: Final answer
    x = 125,963.85

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1.5x scale

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.