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Finding the Fourth Proportional to 84,472.84, 126,690.54 and 25,300.72

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Solution

The fourth proportional to 84,472.84, 126,690.54 and 25,300.72 is: 37,945.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,472.84 : 126,690.54 = 25,300.72 : x
  2. Step 2: Convert to fraction form
    84,472.84/126,690.54 = 25,300.72/x
  3. Step 3: Cross multiply
    84,472.84x = 126,690.54 × 25,300.72
  4. Step 4: Simplify right side
    84,472.84x = 3,205,361,879.19
  5. Step 5: Solve for x
    x = 3,205,361,879.19/84,472.84
  6. Step 6: Final answer
    x = 37,945.47

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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.