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Finding the Fourth Proportional to 7,934.30, 10,954.68 and 7,092.31

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Solution

The fourth proportional to 7,934.30, 10,954.68 and 7,092.31 is: 9,792.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,934.30 : 10,954.68 = 7,092.31 : x
  2. Step 2: Convert to fraction form
    7,934.30/10,954.68 = 7,092.31/x
  3. Step 3: Cross multiply
    7,934.30x = 10,954.68 × 7,092.31
  4. Step 4: Simplify right side
    7,934.30x = 77,693,986.51
  5. Step 5: Solve for x
    x = 77,693,986.51/7,934.30
  6. Step 6: Final answer
    x = 9,792.17

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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.