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Finding the Fourth Proportional to 126,468.52, 174,526.50 and 69,879.40

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Solution

The fourth proportional to 126,468.52, 174,526.50 and 69,879.40 is: 96,433.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,468.52 : 174,526.50 = 69,879.40 : x
  2. Step 2: Convert to fraction form
    126,468.52/174,526.50 = 69,879.40/x
  3. Step 3: Cross multiply
    126,468.52x = 174,526.50 × 69,879.40
  4. Step 4: Simplify right side
    126,468.52x = 12,195,807,104.10
  5. Step 5: Solve for x
    x = 12,195,807,104.10/126,468.52
  6. Step 6: Final answer
    x = 96,433.54

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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.