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Finding the Fourth Proportional to 7,230.88, 9,979.68 and 4,578.53

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Solution

The fourth proportional to 7,230.88, 9,979.68 and 4,578.53 is: 6,319.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230.88 : 9,979.68 = 4,578.53 : x
  2. Step 2: Convert to fraction form
    7,230.88/9,979.68 = 4,578.53/x
  3. Step 3: Cross multiply
    7,230.88x = 9,979.68 × 4,578.53
  4. Step 4: Simplify right side
    7,230.88x = 45,692,264.27
  5. Step 5: Solve for x
    x = 45,692,264.27/7,230.88
  6. Step 6: Final answer
    x = 6,319.05

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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.