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Finding the Fourth Proportional to 73,228.16, 109,579.80 and 63,401.36

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Solution

The fourth proportional to 73,228.16, 109,579.80 and 63,401.36 is: 94,874.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,228.16 : 109,579.80 = 63,401.36 : x
  2. Step 2: Convert to fraction form
    73,228.16/109,579.80 = 63,401.36/x
  3. Step 3: Cross multiply
    73,228.16x = 109,579.80 × 63,401.36
  4. Step 4: Simplify right side
    73,228.16x = 6,947,508,348.53
  5. Step 5: Solve for x
    x = 6,947,508,348.53/73,228.16
  6. Step 6: Final answer
    x = 94,874.82

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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.