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Finding the Fourth Proportional to 942,757.20, 1,412,062.20 and 818,341.20

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Solution

The fourth proportional to 942,757.20, 1,412,062.20 and 818,341.20 is: 1,225,711.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    942,757.20 : 1,412,062.20 = 818,341.20 : x
  2. Step 2: Convert to fraction form
    942,757.20/1,412,062.20 = 818,341.20/x
  3. Step 3: Cross multiply
    942,757.20x = 1,412,062.20 × 818,341.20
  4. Step 4: Simplify right side
    942,757.20x = 1,155,548,675,222.64
  5. Step 5: Solve for x
    x = 1,155,548,675,222.64/942,757.20
  6. Step 6: Final answer
    x = 1,225,711.85

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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.