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Finding the Fourth Proportional to 7,021.92, 9,703.08 and 6,680.24

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Solution

The fourth proportional to 7,021.92, 9,703.08 and 6,680.24 is: 9,230.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.92 : 9,703.08 = 6,680.24 : x
  2. Step 2: Convert to fraction form
    7,021.92/9,703.08 = 6,680.24/x
  3. Step 3: Cross multiply
    7,021.92x = 9,703.08 × 6,680.24
  4. Step 4: Simplify right side
    7,021.92x = 64,818,854.62
  5. Step 5: Solve for x
    x = 64,818,854.62/7,021.92
  6. Step 6: Final answer
    x = 9,230.93

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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.