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Finding the Fourth Proportional to 141,898.40, 195,843.12 and 85,340.96

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Solution

The fourth proportional to 141,898.40, 195,843.12 and 85,340.96 is: 117,784.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,898.40 : 195,843.12 = 85,340.96 : x
  2. Step 2: Convert to fraction form
    141,898.40/195,843.12 = 85,340.96/x
  3. Step 3: Cross multiply
    141,898.40x = 195,843.12 × 85,340.96
  4. Step 4: Simplify right side
    141,898.40x = 16,713,439,870.20
  5. Step 5: Solve for x
    x = 16,713,439,870.20/141,898.40
  6. Step 6: Final answer
    x = 117,784.55

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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.