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Finding the Fourth Proportional to 127,895.40, 191,843.10 and 39,149.10

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Solution

The fourth proportional to 127,895.40, 191,843.10 and 39,149.10 is: 58,723.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,895.40 : 191,843.10 = 39,149.10 : x
  2. Step 2: Convert to fraction form
    127,895.40/191,843.10 = 39,149.10/x
  3. Step 3: Cross multiply
    127,895.40x = 191,843.10 × 39,149.10
  4. Step 4: Simplify right side
    127,895.40x = 7,510,484,706.21
  5. Step 5: Solve for x
    x = 7,510,484,706.21/127,895.40
  6. Step 6: Final answer
    x = 58,723.65

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Similar ratio
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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.