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Finding the Fourth Proportional to 7,045.65, 9,722.92 and 4,062.12

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Solution

The fourth proportional to 7,045.65, 9,722.92 and 4,062.12 is: 5,605.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,045.65 : 9,722.92 = 4,062.12 : x
  2. Step 2: Convert to fraction form
    7,045.65/9,722.92 = 4,062.12/x
  3. Step 3: Cross multiply
    7,045.65x = 9,722.92 × 4,062.12
  4. Step 4: Simplify right side
    7,045.65x = 39,495,667.79
  5. Step 5: Solve for x
    x = 39,495,667.79/7,045.65
  6. Step 6: Final answer
    x = 5,605.68

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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.