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Finding the Fourth Proportional to 72,017.25, 108,064.76 and 35,081.25

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Solution

The fourth proportional to 72,017.25, 108,064.76 and 35,081.25 is: 52,640.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,017.25 : 108,064.76 = 35,081.25 : x
  2. Step 2: Convert to fraction form
    72,017.25/108,064.76 = 35,081.25/x
  3. Step 3: Cross multiply
    72,017.25x = 108,064.76 × 35,081.25
  4. Step 4: Simplify right side
    72,017.25x = 3,791,046,686.34
  5. Step 5: Solve for x
    x = 3,791,046,686.34/72,017.25
  6. Step 6: Final answer
    x = 52,640.81

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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.