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Finding the Fourth Proportional to 64,257.20, 96,616.20 and 54,119.60

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Solution

The fourth proportional to 64,257.20, 96,616.20 and 54,119.60 is: 81,373.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,257.20 : 96,616.20 = 54,119.60 : x
  2. Step 2: Convert to fraction form
    64,257.20/96,616.20 = 54,119.60/x
  3. Step 3: Cross multiply
    64,257.20x = 96,616.20 × 54,119.60
  4. Step 4: Simplify right side
    64,257.20x = 5,228,830,097.52
  5. Step 5: Solve for x
    x = 5,228,830,097.52/64,257.20
  6. Step 6: Final answer
    x = 81,373.45

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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.