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Finding the Fourth Proportional to 7,047.90, 9,722.90 and 4,062.65

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Solution

The fourth proportional to 7,047.90, 9,722.90 and 4,062.65 is: 5,604.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,047.90 : 9,722.90 = 4,062.65 : x
  2. Step 2: Convert to fraction form
    7,047.90/9,722.90 = 4,062.65/x
  3. Step 3: Cross multiply
    7,047.90x = 9,722.90 × 4,062.65
  4. Step 4: Simplify right side
    7,047.90x = 39,500,701.23
  5. Step 5: Solve for x
    x = 39,500,701.23/7,047.90
  6. Step 6: Final answer
    x = 5,604.61

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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.