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Finding the Fourth Proportional to 144,911.40, 217,356.30 and 60,649.80

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Solution

The fourth proportional to 144,911.40, 217,356.30 and 60,649.80 is: 90,970.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,911.40 : 217,356.30 = 60,649.80 : x
  2. Step 2: Convert to fraction form
    144,911.40/217,356.30 = 60,649.80/x
  3. Step 3: Cross multiply
    144,911.40x = 217,356.30 × 60,649.80
  4. Step 4: Simplify right side
    144,911.40x = 13,182,616,123.74
  5. Step 5: Solve for x
    x = 13,182,616,123.74/144,911.40
  6. Step 6: Final answer
    x = 90,970.18

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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.