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Finding the Fourth Proportional to 986,791.76, 1,361,776.77 and 534,082.76

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Solution

The fourth proportional to 986,791.76, 1,361,776.77 and 534,082.76 is: 737,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,791.76 : 1,361,776.77 = 534,082.76 : x
  2. Step 2: Convert to fraction form
    986,791.76/1,361,776.77 = 534,082.76/x
  3. Step 3: Cross multiply
    986,791.76x = 1,361,776.77 × 534,082.76
  4. Step 4: Simplify right side
    986,791.76x = 727,301,489,016.60
  5. Step 5: Solve for x
    x = 727,301,489,016.60/986,791.76
  6. Step 6: Final answer
    x = 737,036.45

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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.