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Finding the Fourth Proportional to 618,329.40, 927,494.10 and 512,041.20

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Solution

The fourth proportional to 618,329.40, 927,494.10 and 512,041.20 is: 768,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,329.40 : 927,494.10 = 512,041.20 : x
  2. Step 2: Convert to fraction form
    618,329.40/927,494.10 = 512,041.20/x
  3. Step 3: Cross multiply
    618,329.40x = 927,494.10 × 512,041.20
  4. Step 4: Simplify right side
    618,329.40x = 474,915,191,956.92
  5. Step 5: Solve for x
    x = 474,915,191,956.92/618,329.40
  6. Step 6: Final answer
    x = 768,061.80

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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.