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Finding the Fourth Proportional to 589,171.52, 813,091.55 and 443,720.77

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Solution

The fourth proportional to 589,171.52, 813,091.55 and 443,720.77 is: 612,360.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,171.52 : 813,091.55 = 443,720.77 : x
  2. Step 2: Convert to fraction form
    589,171.52/813,091.55 = 443,720.77/x
  3. Step 3: Cross multiply
    589,171.52x = 813,091.55 × 443,720.77
  4. Step 4: Simplify right side
    589,171.52x = 360,785,608,646.49
  5. Step 5: Solve for x
    x = 360,785,608,646.49/589,171.52
  6. Step 6: Final answer
    x = 612,360.91

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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.