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Finding the Fourth Proportional to 986,611.88, 1,361,524.40 and 533,902.88

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Solution

The fourth proportional to 986,611.88, 1,361,524.40 and 533,902.88 is: 736,785.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,611.88 : 1,361,524.40 = 533,902.88 : x
  2. Step 2: Convert to fraction form
    986,611.88/1,361,524.40 = 533,902.88/x
  3. Step 3: Cross multiply
    986,611.88x = 1,361,524.40 × 533,902.88
  4. Step 4: Simplify right side
    986,611.88x = 726,921,788,873.14
  5. Step 5: Solve for x
    x = 726,921,788,873.14/986,611.88
  6. Step 6: Final answer
    x = 736,785.97

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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.