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Finding the Fourth Proportional to 1,149,704.76, 1,724,824.30 and 391,552.80

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Solution

The fourth proportional to 1,149,704.76, 1,724,824.30 and 391,552.80 is: 587,420.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149,704.76 : 1,724,824.30 = 391,552.80 : x
  2. Step 2: Convert to fraction form
    1,149,704.76/1,724,824.30 = 391,552.80/x
  3. Step 3: Cross multiply
    1,149,704.76x = 1,724,824.30 × 391,552.80
  4. Step 4: Simplify right side
    1,149,704.76x = 675,359,784,173.04
  5. Step 5: Solve for x
    x = 675,359,784,173.04/1,149,704.76
  6. Step 6: Final answer
    x = 587,420.19

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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.