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Finding the Fourth Proportional to 141,178.53, 194,917.55 and 87,520.89

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Solution

The fourth proportional to 141,178.53, 194,917.55 and 87,520.89 is: 120,835.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,178.53 : 194,917.55 = 87,520.89 : x
  2. Step 2: Convert to fraction form
    141,178.53/194,917.55 = 87,520.89/x
  3. Step 3: Cross multiply
    141,178.53x = 194,917.55 × 87,520.89
  4. Step 4: Simplify right side
    141,178.53x = 17,059,357,015.02
  5. Step 5: Solve for x
    x = 17,059,357,015.02/141,178.53
  6. Step 6: Final answer
    x = 120,835.35

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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.