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Finding the Fourth Proportional to 60,480.39, 90,708.74 and 57,479.88

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Solution

The fourth proportional to 60,480.39, 90,708.74 and 57,479.88 is: 86,208.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,480.39 : 90,708.74 = 57,479.88 : x
  2. Step 2: Convert to fraction form
    60,480.39/90,708.74 = 57,479.88/x
  3. Step 3: Cross multiply
    60,480.39x = 90,708.74 × 57,479.88
  4. Step 4: Simplify right side
    60,480.39x = 5,213,927,490.15
  5. Step 5: Solve for x
    x = 5,213,927,490.15/60,480.39
  6. Step 6: Final answer
    x = 86,208.56

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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.