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Finding the Fourth Proportional to 519,821.62, 780,043.47 and 477,520.18

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Solution

The fourth proportional to 519,821.62, 780,043.47 and 477,520.18 is: 716,566.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,821.62 : 780,043.47 = 477,520.18 : x
  2. Step 2: Convert to fraction form
    519,821.62/780,043.47 = 477,520.18/x
  3. Step 3: Cross multiply
    519,821.62x = 780,043.47 × 477,520.18
  4. Step 4: Simplify right side
    519,821.62x = 372,486,498,202.23
  5. Step 5: Solve for x
    x = 372,486,498,202.23/519,821.62
  6. Step 6: Final answer
    x = 716,566.00

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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.