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Finding the Fourth Proportional to 681,405.70, 933,529.15 and 655,866.79

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Solution

The fourth proportional to 681,405.70, 933,529.15 and 655,866.79 is: 898,540.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,405.70 : 933,529.15 = 655,866.79 : x
  2. Step 2: Convert to fraction form
    681,405.70/933,529.15 = 655,866.79/x
  3. Step 3: Cross multiply
    681,405.70x = 933,529.15 × 655,866.79
  4. Step 4: Simplify right side
    681,405.70x = 612,270,766,981.93
  5. Step 5: Solve for x
    x = 612,270,766,981.93/681,405.70
  6. Step 6: Final answer
    x = 898,540.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.