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Finding the Fourth Proportional to 656,145.20, 984,217.80 and 561,666.80

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Solution

The fourth proportional to 656,145.20, 984,217.80 and 561,666.80 is: 842,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,145.20 : 984,217.80 = 561,666.80 : x
  2. Step 2: Convert to fraction form
    656,145.20/984,217.80 = 561,666.80/x
  3. Step 3: Cross multiply
    656,145.20x = 984,217.80 × 561,666.80
  4. Step 4: Simplify right side
    656,145.20x = 552,802,462,229.04
  5. Step 5: Solve for x
    x = 552,802,462,229.04/656,145.20
  6. Step 6: Final answer
    x = 842,500.20

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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.