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Finding the Fourth Proportional to 10,599.69, 15,852.92 and 7,979.55

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Solution

The fourth proportional to 10,599.69, 15,852.92 and 7,979.55 is: 11,934.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,599.69 : 15,852.92 = 7,979.55 : x
  2. Step 2: Convert to fraction form
    10,599.69/15,852.92 = 7,979.55/x
  3. Step 3: Cross multiply
    10,599.69x = 15,852.92 × 7,979.55
  4. Step 4: Simplify right side
    10,599.69x = 126,499,068.44
  5. Step 5: Solve for x
    x = 126,499,068.44/10,599.69
  6. Step 6: Final answer
    x = 11,934.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.