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Finding the Fourth Proportional to 984,806.64, 1,359,014.22 and 555,078.42

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Solution

The fourth proportional to 984,806.64, 1,359,014.22 and 555,078.42 is: 765,997.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,806.64 : 1,359,014.22 = 555,078.42 : x
  2. Step 2: Convert to fraction form
    984,806.64/1,359,014.22 = 555,078.42/x
  3. Step 3: Cross multiply
    984,806.64x = 1,359,014.22 × 555,078.42
  4. Step 4: Simplify right side
    984,806.64x = 754,359,465,995.13
  5. Step 5: Solve for x
    x = 754,359,465,995.13/984,806.64
  6. Step 6: Final answer
    x = 765,997.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.