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Finding the Fourth Proportional to 525,080.80, 787,621.20 and 437,600.80

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Solution

The fourth proportional to 525,080.80, 787,621.20 and 437,600.80 is: 656,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,080.80 : 787,621.20 = 437,600.80 : x
  2. Step 2: Convert to fraction form
    525,080.80/787,621.20 = 437,600.80/x
  3. Step 3: Cross multiply
    525,080.80x = 787,621.20 × 437,600.80
  4. Step 4: Simplify right side
    525,080.80x = 344,663,667,216.96
  5. Step 5: Solve for x
    x = 344,663,667,216.96/525,080.80
  6. Step 6: Final answer
    x = 656,401.20

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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.