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Finding the Fourth Proportional to 72,479.24, 108,664.03 and 47,525.57

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Solution

The fourth proportional to 72,479.24, 108,664.03 and 47,525.57 is: 71,252.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,479.24 : 108,664.03 = 47,525.57 : x
  2. Step 2: Convert to fraction form
    72,479.24/108,664.03 = 47,525.57/x
  3. Step 3: Cross multiply
    72,479.24x = 108,664.03 × 47,525.57
  4. Step 4: Simplify right side
    72,479.24x = 5,164,319,964.25
  5. Step 5: Solve for x
    x = 5,164,319,964.25/72,479.24
  6. Step 6: Final answer
    x = 71,252.40

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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.