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Finding the Fourth Proportional to 543,334.40, 814,965.15 and 143,966.60

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Solution

The fourth proportional to 543,334.40, 814,965.15 and 143,966.60 is: 215,940.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,334.40 : 814,965.15 = 143,966.60 : x
  2. Step 2: Convert to fraction form
    543,334.40/814,965.15 = 143,966.60/x
  3. Step 3: Cross multiply
    543,334.40x = 814,965.15 × 143,966.60
  4. Step 4: Simplify right side
    543,334.40x = 117,327,761,763.99
  5. Step 5: Solve for x
    x = 117,327,761,763.99/543,334.40
  6. Step 6: Final answer
    x = 215,940.24

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1.5x scale

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.