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Finding the Fourth Proportional to 60,859.80, 83,978.91 and 34,001.28

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Solution

The fourth proportional to 60,859.80, 83,978.91 and 34,001.28 is: 46,917.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,859.80 : 83,978.91 = 34,001.28 : x
  2. Step 2: Convert to fraction form
    60,859.80/83,978.91 = 34,001.28/x
  3. Step 3: Cross multiply
    60,859.80x = 83,978.91 × 34,001.28
  4. Step 4: Simplify right side
    60,859.80x = 2,855,390,433.00
  5. Step 5: Solve for x
    x = 2,855,390,433.00/60,859.80
  6. Step 6: Final answer
    x = 46,917.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.