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Finding the Fourth Proportional to 127,630.56, 191,473.12 and 38,891.16

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Solution

The fourth proportional to 127,630.56, 191,473.12 and 38,891.16 is: 58,345.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,630.56 : 191,473.12 = 38,891.16 : x
  2. Step 2: Convert to fraction form
    127,630.56/191,473.12 = 38,891.16/x
  3. Step 3: Cross multiply
    127,630.56x = 191,473.12 × 38,891.16
  4. Step 4: Simplify right side
    127,630.56x = 7,446,611,745.62
  5. Step 5: Solve for x
    x = 7,446,611,745.62/127,630.56
  6. Step 6: Final answer
    x = 58,345.05

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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.