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Finding the Fourth Proportional to 581,661.58, 871,601.17 and 391,418.10

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Solution

The fourth proportional to 581,661.58, 871,601.17 and 391,418.10 is: 586,527.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,661.58 : 871,601.17 = 391,418.10 : x
  2. Step 2: Convert to fraction form
    581,661.58/871,601.17 = 391,418.10/x
  3. Step 3: Cross multiply
    581,661.58x = 871,601.17 × 391,418.10
  4. Step 4: Simplify right side
    581,661.58x = 341,160,473,919.18
  5. Step 5: Solve for x
    x = 341,160,473,919.18/581,661.58
  6. Step 6: Final answer
    x = 586,527.43

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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.