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Finding the Fourth Proportional to 381,587.76, 572,393.88 and 191,944.56

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Solution

The fourth proportional to 381,587.76, 572,393.88 and 191,944.56 is: 287,923.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,587.76 : 572,393.88 = 191,944.56 : x
  2. Step 2: Convert to fraction form
    381,587.76/572,393.88 = 191,944.56/x
  3. Step 3: Cross multiply
    381,587.76x = 572,393.88 × 191,944.56
  4. Step 4: Simplify right side
    381,587.76x = 109,867,891,443.29
  5. Step 5: Solve for x
    x = 109,867,891,443.29/381,587.76
  6. Step 6: Final answer
    x = 287,923.00

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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.