Home / 56,865.12-85,278.62-18,905.64

Finding the Fourth Proportional to 56,865.12, 85,278.62 and 18,905.64

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Solution

The fourth proportional to 56,865.12, 85,278.62 and 18,905.64 is: 28,352.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,865.12 : 85,278.62 = 18,905.64 : x
  2. Step 2: Convert to fraction form
    56,865.12/85,278.62 = 18,905.64/x
  3. Step 3: Cross multiply
    56,865.12x = 85,278.62 × 18,905.64
  4. Step 4: Simplify right side
    56,865.12x = 1,612,246,616.89
  5. Step 5: Solve for x
    x = 1,612,246,616.89/56,865.12
  6. Step 6: Final answer
    x = 28,352.12

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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.