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Finding the Fourth Proportional to 5,921.59, 8,181.59 and 4,672.15

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Solution

The fourth proportional to 5,921.59, 8,181.59 and 4,672.15 is: 6,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.59 : 8,181.59 = 4,672.15 : x
  2. Step 2: Convert to fraction form
    5,921.59/8,181.59 = 4,672.15/x
  3. Step 3: Cross multiply
    5,921.59x = 8,181.59 × 4,672.15
  4. Step 4: Simplify right side
    5,921.59x = 38,225,606.94
  5. Step 5: Solve for x
    x = 38,225,606.94/5,921.59
  6. Step 6: Final answer
    x = 6,455.30

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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.