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Finding the Fourth Proportional to 64,458.60, 96,760.80 and 49,732.80

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Solution

The fourth proportional to 64,458.60, 96,760.80 and 49,732.80 is: 74,655.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,458.60 : 96,760.80 = 49,732.80 : x
  2. Step 2: Convert to fraction form
    64,458.60/96,760.80 = 49,732.80/x
  3. Step 3: Cross multiply
    64,458.60x = 96,760.80 × 49,732.80
  4. Step 4: Simplify right side
    64,458.60x = 4,812,185,514.24
  5. Step 5: Solve for x
    x = 4,812,185,514.24/64,458.60
  6. Step 6: Final answer
    x = 74,655.45

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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.