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Finding the Fourth Proportional to 613,200.60, 919,800.90 and 519,888.60

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Solution

The fourth proportional to 613,200.60, 919,800.90 and 519,888.60 is: 779,832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,200.60 : 919,800.90 = 519,888.60 : x
  2. Step 2: Convert to fraction form
    613,200.60/919,800.90 = 519,888.60/x
  3. Step 3: Cross multiply
    613,200.60x = 919,800.90 × 519,888.60
  4. Step 4: Simplify right side
    613,200.60x = 478,194,002,179.74
  5. Step 5: Solve for x
    x = 478,194,002,179.74/613,200.60
  6. Step 6: Final answer
    x = 779,832.90

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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.