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Finding the Fourth Proportional to 108,983.68, 163,474.47 and 64,578.47

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Solution

The fourth proportional to 108,983.68, 163,474.47 and 64,578.47 is: 96,867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,983.68 : 163,474.47 = 64,578.47 : x
  2. Step 2: Convert to fraction form
    108,983.68/163,474.47 = 64,578.47/x
  3. Step 3: Cross multiply
    108,983.68x = 163,474.47 × 64,578.47
  4. Step 4: Simplify right side
    108,983.68x = 10,556,930,339.29
  5. Step 5: Solve for x
    x = 10,556,930,339.29/108,983.68
  6. Step 6: Final answer
    x = 96,867.08

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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.