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Finding the Fourth Proportional to 6,876.48, 9,488.16 and 4,224.32

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Solution

The fourth proportional to 6,876.48, 9,488.16 and 4,224.32 is: 5,828.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,876.48 : 9,488.16 = 4,224.32 : x
  2. Step 2: Convert to fraction form
    6,876.48/9,488.16 = 4,224.32/x
  3. Step 3: Cross multiply
    6,876.48x = 9,488.16 × 4,224.32
  4. Step 4: Simplify right side
    6,876.48x = 40,081,024.05
  5. Step 5: Solve for x
    x = 40,081,024.05/6,876.48
  6. Step 6: Final answer
    x = 5,828.71

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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.