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Finding the Fourth Proportional to 7,042.65, 9,718.79 and 4,059.11

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Solution

The fourth proportional to 7,042.65, 9,718.79 and 4,059.11 is: 5,601.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.65 : 9,718.79 = 4,059.11 : x
  2. Step 2: Convert to fraction form
    7,042.65/9,718.79 = 4,059.11/x
  3. Step 3: Cross multiply
    7,042.65x = 9,718.79 × 4,059.11
  4. Step 4: Simplify right side
    7,042.65x = 39,449,641.68
  5. Step 5: Solve for x
    x = 39,449,641.68/7,042.65
  6. Step 6: Final answer
    x = 5,601.54

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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.