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Finding the Fourth Proportional to 7,160.82, 9,881.89 and 4,017

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Solution

The fourth proportional to 7,160.82, 9,881.89 and 4,017 is: 5,543.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,160.82 : 9,881.89 = 4,017 : x
  2. Step 2: Convert to fraction form
    7,160.82/9,881.89 = 4,017/x
  3. Step 3: Cross multiply
    7,160.82x = 9,881.89 × 4,017
  4. Step 4: Simplify right side
    7,160.82x = 39,695,552.13
  5. Step 5: Solve for x
    x = 39,695,552.13/7,160.82
  6. Step 6: Final answer
    x = 5,543.44

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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.