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Finding the Fourth Proportional to 191,498.38, 287,185.81 and 63,390.76

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Solution

The fourth proportional to 191,498.38, 287,185.81 and 63,390.76 is: 95,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,498.38 : 287,185.81 = 63,390.76 : x
  2. Step 2: Convert to fraction form
    191,498.38/287,185.81 = 63,390.76/x
  3. Step 3: Cross multiply
    191,498.38x = 287,185.81 × 63,390.76
  4. Step 4: Simplify right side
    191,498.38x = 18,204,926,757.12
  5. Step 5: Solve for x
    x = 18,204,926,757.12/191,498.38
  6. Step 6: Final answer
    x = 95,065.70

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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.