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Finding the Fourth Proportional to 5,800.78, 8,700.90 and 2,335.60

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Solution

The fourth proportional to 5,800.78, 8,700.90 and 2,335.60 is: 3,503.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,800.78 : 8,700.90 = 2,335.60 : x
  2. Step 2: Convert to fraction form
    5,800.78/8,700.90 = 2,335.60/x
  3. Step 3: Cross multiply
    5,800.78x = 8,700.90 × 2,335.60
  4. Step 4: Simplify right side
    5,800.78x = 20,321,822.04
  5. Step 5: Solve for x
    x = 20,321,822.04/5,800.78
  6. Step 6: Final answer
    x = 3,503.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.