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Finding the Fourth Proportional to 619,216.80, 928,387.80 and 282,418.80

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Solution

The fourth proportional to 619,216.80, 928,387.80 and 282,418.80 is: 423,428.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,216.80 : 928,387.80 = 282,418.80 : x
  2. Step 2: Convert to fraction form
    619,216.80/928,387.80 = 282,418.80/x
  3. Step 3: Cross multiply
    619,216.80x = 928,387.80 × 282,418.80
  4. Step 4: Simplify right side
    619,216.80x = 262,194,168,410.64
  5. Step 5: Solve for x
    x = 262,194,168,410.64/619,216.80
  6. Step 6: Final answer
    x = 423,428.71

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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.