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Finding the Fourth Proportional to 84,009.47, 126,017.87 and 39,073.01

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Solution

The fourth proportional to 84,009.47, 126,017.87 and 39,073.01 is: 58,611.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,009.47 : 126,017.87 = 39,073.01 : x
  2. Step 2: Convert to fraction form
    84,009.47/126,017.87 = 39,073.01/x
  3. Step 3: Cross multiply
    84,009.47x = 126,017.87 × 39,073.01
  4. Step 4: Simplify right side
    84,009.47x = 4,923,896,669.23
  5. Step 5: Solve for x
    x = 4,923,896,669.23/84,009.47
  6. Step 6: Final answer
    x = 58,611.21

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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.