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Finding the Fourth Proportional to 141,873.44, 195,785.94 and 78,209.84

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Solution

The fourth proportional to 141,873.44, 195,785.94 and 78,209.84 is: 107,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,873.44 : 195,785.94 = 78,209.84 : x
  2. Step 2: Convert to fraction form
    141,873.44/195,785.94 = 78,209.84/x
  3. Step 3: Cross multiply
    141,873.44x = 195,785.94 × 78,209.84
  4. Step 4: Simplify right side
    141,873.44x = 15,312,387,041.65
  5. Step 5: Solve for x
    x = 15,312,387,041.65/141,873.44
  6. Step 6: Final answer
    x = 107,929.91

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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.