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Finding the Fourth Proportional to 127,098.72, 190,648.08 and 43,992.72

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Solution

The fourth proportional to 127,098.72, 190,648.08 and 43,992.72 is: 65,989.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,098.72 : 190,648.08 = 43,992.72 : x
  2. Step 2: Convert to fraction form
    127,098.72/190,648.08 = 43,992.72/x
  3. Step 3: Cross multiply
    127,098.72x = 190,648.08 × 43,992.72
  4. Step 4: Simplify right side
    127,098.72x = 8,387,127,601.98
  5. Step 5: Solve for x
    x = 8,387,127,601.98/127,098.72
  6. Step 6: Final answer
    x = 65,989.08

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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.