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Finding the Fourth Proportional to 618,390.55, 927,561.56 and 258,468.44

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Solution

The fourth proportional to 618,390.55, 927,561.56 and 258,468.44 is: 387,692.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,390.55 : 927,561.56 = 258,468.44 : x
  2. Step 2: Convert to fraction form
    618,390.55/927,561.56 = 258,468.44/x
  3. Step 3: Cross multiply
    618,390.55x = 927,561.56 × 258,468.44
  4. Step 4: Simplify right side
    618,390.55x = 239,745,390,443.73
  5. Step 5: Solve for x
    x = 239,745,390,443.73/618,390.55
  6. Step 6: Final answer
    x = 387,692.52

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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.