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Finding the Fourth Proportional to 7,966.80, 10,999.62 and 7,301.16

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Solution

The fourth proportional to 7,966.80, 10,999.62 and 7,301.16 is: 10,080.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,966.80 : 10,999.62 = 7,301.16 : x
  2. Step 2: Convert to fraction form
    7,966.80/10,999.62 = 7,301.16/x
  3. Step 3: Cross multiply
    7,966.80x = 10,999.62 × 7,301.16
  4. Step 4: Simplify right side
    7,966.80x = 80,309,985.56
  5. Step 5: Solve for x
    x = 80,309,985.56/7,966.80
  6. Step 6: Final answer
    x = 10,080.58

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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.