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Finding the Fourth Proportional to 126,978.66, 175,232.52 and 69,623.22

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Solution

The fourth proportional to 126,978.66, 175,232.52 and 69,623.22 is: 96,081.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,978.66 : 175,232.52 = 69,623.22 : x
  2. Step 2: Convert to fraction form
    126,978.66/175,232.52 = 69,623.22/x
  3. Step 3: Cross multiply
    126,978.66x = 175,232.52 × 69,623.22
  4. Step 4: Simplify right side
    126,978.66x = 12,200,252,291.11
  5. Step 5: Solve for x
    x = 12,200,252,291.11/126,978.66
  6. Step 6: Final answer
    x = 96,081.12

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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.