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Finding the Fourth Proportional to 127,992.70, 191,996.54 and 39,247.08

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Solution

The fourth proportional to 127,992.70, 191,996.54 and 39,247.08 is: 58,872.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,992.70 : 191,996.54 = 39,247.08 : x
  2. Step 2: Convert to fraction form
    127,992.70/191,996.54 = 39,247.08/x
  3. Step 3: Cross multiply
    127,992.70x = 191,996.54 × 39,247.08
  4. Step 4: Simplify right side
    127,992.70x = 7,535,303,565.10
  5. Step 5: Solve for x
    x = 7,535,303,565.10/127,992.70
  6. Step 6: Final answer
    x = 58,872.92

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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.