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Finding the Fourth Proportional to 141,873.80, 195,794.40 and 78,211.32

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Solution

The fourth proportional to 141,873.80, 195,794.40 and 78,211.32 is: 107,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,873.80 : 195,794.40 = 78,211.32 : x
  2. Step 2: Convert to fraction form
    141,873.80/195,794.40 = 78,211.32/x
  3. Step 3: Cross multiply
    141,873.80x = 195,794.40 × 78,211.32
  4. Step 4: Simplify right side
    141,873.80x = 15,313,338,472.61
  5. Step 5: Solve for x
    x = 15,313,338,472.61/141,873.80
  6. Step 6: Final answer
    x = 107,936.34

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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.