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Finding the Fourth Proportional to 4,672.79, 6,978.90 and 4,233.16

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Solution

The fourth proportional to 4,672.79, 6,978.90 and 4,233.16 is: 6,322.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,672.79 : 6,978.90 = 4,233.16 : x
  2. Step 2: Convert to fraction form
    4,672.79/6,978.90 = 4,233.16/x
  3. Step 3: Cross multiply
    4,672.79x = 6,978.90 × 4,233.16
  4. Step 4: Simplify right side
    4,672.79x = 29,542,793.17
  5. Step 5: Solve for x
    x = 29,542,793.17/4,672.79
  6. Step 6: Final answer
    x = 6,322.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.