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Finding the Fourth Proportional to 67,391.48, 100,649.51 and 63,367.40

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Solution

The fourth proportional to 67,391.48, 100,649.51 and 63,367.40 is: 94,639.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,391.48 : 100,649.51 = 63,367.40 : x
  2. Step 2: Convert to fraction form
    67,391.48/100,649.51 = 63,367.40/x
  3. Step 3: Cross multiply
    67,391.48x = 100,649.51 × 63,367.40
  4. Step 4: Simplify right side
    67,391.48x = 6,377,896,939.89
  5. Step 5: Solve for x
    x = 6,377,896,939.89/67,391.48
  6. Step 6: Final answer
    x = 94,639.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.