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Finding the Fourth Proportional to 1,086,378.80, 1,524,079.60 and 1,086,378.80

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Solution

The fourth proportional to 1,086,378.80, 1,524,079.60 and 1,086,378.80 is: 1,524,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,378.80 : 1,524,079.60 = 1,086,378.80 : x
  2. Step 2: Convert to fraction form
    1,086,378.80/1,524,079.60 = 1,086,378.80/x
  3. Step 3: Cross multiply
    1,086,378.80x = 1,524,079.60 × 1,086,378.80
  4. Step 4: Simplify right side
    1,086,378.80x = 1,655,727,766,952.48
  5. Step 5: Solve for x
    x = 1,655,727,766,952.48/1,086,378.80
  6. Step 6: Final answer
    x = 1,524,079.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.