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Finding the Fourth Proportional to 191,473.20, 287,210.52 and 66,814.20

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Solution

The fourth proportional to 191,473.20, 287,210.52 and 66,814.20 is: 100,221.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,473.20 : 287,210.52 = 66,814.20 : x
  2. Step 2: Convert to fraction form
    191,473.20/287,210.52 = 66,814.20/x
  3. Step 3: Cross multiply
    191,473.20x = 287,210.52 × 66,814.20
  4. Step 4: Simplify right side
    191,473.20x = 19,189,741,125.38
  5. Step 5: Solve for x
    x = 19,189,741,125.38/191,473.20
  6. Step 6: Final answer
    x = 100,221.55

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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.