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Finding the Fourth Proportional to 516,154.80, 774,232.20 and 440,047.20

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Solution

The fourth proportional to 516,154.80, 774,232.20 and 440,047.20 is: 660,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,154.80 : 774,232.20 = 440,047.20 : x
  2. Step 2: Convert to fraction form
    516,154.80/774,232.20 = 440,047.20/x
  3. Step 3: Cross multiply
    516,154.80x = 774,232.20 × 440,047.20
  4. Step 4: Simplify right side
    516,154.80x = 340,698,711,759.84
  5. Step 5: Solve for x
    x = 340,698,711,759.84/516,154.80
  6. Step 6: Final answer
    x = 660,070.80

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Similar ratio
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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.