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Finding the Fourth Proportional to 986,615.90, 1,361,529.89 and 533,906.90

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Solution

The fourth proportional to 986,615.90, 1,361,529.89 and 533,906.90 is: 736,791.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,615.90 : 1,361,529.89 = 533,906.90 : x
  2. Step 2: Convert to fraction form
    986,615.90/1,361,529.89 = 533,906.90/x
  3. Step 3: Cross multiply
    986,615.90x = 1,361,529.89 × 533,906.90
  4. Step 4: Simplify right side
    986,615.90x = 726,930,202,827.24
  5. Step 5: Solve for x
    x = 726,930,202,827.24/986,615.90
  6. Step 6: Final answer
    x = 736,791.49

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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.