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Finding the Fourth Proportional to 67,390.48, 100,648.02 and 63,366.40

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Solution

The fourth proportional to 67,390.48, 100,648.02 and 63,366.40 is: 94,638.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,390.48 : 100,648.02 = 63,366.40 : x
  2. Step 2: Convert to fraction form
    67,390.48/100,648.02 = 63,366.40/x
  3. Step 3: Cross multiply
    67,390.48x = 100,648.02 × 63,366.40
  4. Step 4: Simplify right side
    67,390.48x = 6,377,701,874.46
  5. Step 5: Solve for x
    x = 6,377,701,874.46/67,390.48
  6. Step 6: Final answer
    x = 94,638.03

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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.