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Finding the Fourth Proportional to 127,945.88, 192,085.12 and 98,384.47

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Solution

The fourth proportional to 127,945.88, 192,085.12 and 98,384.47 is: 147,704.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,945.88 : 192,085.12 = 98,384.47 : x
  2. Step 2: Convert to fraction form
    127,945.88/192,085.12 = 98,384.47/x
  3. Step 3: Cross multiply
    127,945.88x = 192,085.12 × 98,384.47
  4. Step 4: Simplify right side
    127,945.88x = 18,898,192,368.85
  5. Step 5: Solve for x
    x = 18,898,192,368.85/127,945.88
  6. Step 6: Final answer
    x = 147,704.58

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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.