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Finding the Fourth Proportional to 64,479.84, 96,723.12 and 17,731.68

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Solution

The fourth proportional to 64,479.84, 96,723.12 and 17,731.68 is: 26,598.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,479.84 : 96,723.12 = 17,731.68 : x
  2. Step 2: Convert to fraction form
    64,479.84/96,723.12 = 17,731.68/x
  3. Step 3: Cross multiply
    64,479.84x = 96,723.12 × 17,731.68
  4. Step 4: Simplify right side
    64,479.84x = 1,715,063,412.44
  5. Step 5: Solve for x
    x = 1,715,063,412.44/64,479.84
  6. Step 6: Final answer
    x = 26,598.44

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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.