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Finding the Fourth Proportional to 169,978.11, 234,574.21 and 93,499.18

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Solution

The fourth proportional to 169,978.11, 234,574.21 and 93,499.18 is: 129,031.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,978.11 : 234,574.21 = 93,499.18 : x
  2. Step 2: Convert to fraction form
    169,978.11/234,574.21 = 93,499.18/x
  3. Step 3: Cross multiply
    169,978.11x = 234,574.21 × 93,499.18
  4. Step 4: Simplify right side
    169,978.11x = 21,932,496,284.15
  5. Step 5: Solve for x
    x = 21,932,496,284.15/169,978.11
  6. Step 6: Final answer
    x = 129,031.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.