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Finding the Fourth Proportional to 60,428.70, 90,643.05 and 41,401.80

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Solution

The fourth proportional to 60,428.70, 90,643.05 and 41,401.80 is: 62,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,428.70 : 90,643.05 = 41,401.80 : x
  2. Step 2: Convert to fraction form
    60,428.70/90,643.05 = 41,401.80/x
  3. Step 3: Cross multiply
    60,428.70x = 90,643.05 × 41,401.80
  4. Step 4: Simplify right side
    60,428.70x = 3,752,785,427.49
  5. Step 5: Solve for x
    x = 3,752,785,427.49/60,428.70
  6. Step 6: Final answer
    x = 62,102.70

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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.