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Finding the Fourth Proportional to 7,042.92, 9,717.12 and 4,018.04

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Solution

The fourth proportional to 7,042.92, 9,717.12 and 4,018.04 is: 5,543.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.92 : 9,717.12 = 4,018.04 : x
  2. Step 2: Convert to fraction form
    7,042.92/9,717.12 = 4,018.04/x
  3. Step 3: Cross multiply
    7,042.92x = 9,717.12 × 4,018.04
  4. Step 4: Simplify right side
    7,042.92x = 39,043,728.26
  5. Step 5: Solve for x
    x = 39,043,728.26/7,042.92
  6. Step 6: Final answer
    x = 5,543.68

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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.