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Finding the Fourth Proportional to 65,791, 98,687.34 and 19,043.92

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Solution

The fourth proportional to 65,791, 98,687.34 and 19,043.92 is: 28,566.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,791 : 98,687.34 = 19,043.92 : x
  2. Step 2: Convert to fraction form
    65,791/98,687.34 = 19,043.92/x
  3. Step 3: Cross multiply
    65,791x = 98,687.34 × 19,043.92
  4. Step 4: Simplify right side
    65,791x = 1,879,393,807.97
  5. Step 5: Solve for x
    x = 1,879,393,807.97/65,791
  6. Step 6: Final answer
    x = 28,566.12

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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.