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Finding the Fourth Proportional to 619,764.95, 930,040.68 and 264,781.64

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Solution

The fourth proportional to 619,764.95, 930,040.68 and 264,781.64 is: 397,340.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,764.95 : 930,040.68 = 264,781.64 : x
  2. Step 2: Convert to fraction form
    619,764.95/930,040.68 = 264,781.64/x
  3. Step 3: Cross multiply
    619,764.95x = 930,040.68 × 264,781.64
  4. Step 4: Simplify right side
    619,764.95x = 246,257,691,866.91
  5. Step 5: Solve for x
    x = 246,257,691,866.91/619,764.95
  6. Step 6: Final answer
    x = 397,340.47

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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.