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Finding the Fourth Proportional to 12,823.68, 17,693.76 and 7,232.64

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Solution

The fourth proportional to 12,823.68, 17,693.76 and 7,232.64 is: 9,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,823.68 : 17,693.76 = 7,232.64 : x
  2. Step 2: Convert to fraction form
    12,823.68/17,693.76 = 7,232.64/x
  3. Step 3: Cross multiply
    12,823.68x = 17,693.76 × 7,232.64
  4. Step 4: Simplify right side
    12,823.68x = 127,972,596.33
  5. Step 5: Solve for x
    x = 127,972,596.33/12,823.68
  6. Step 6: Final answer
    x = 9,979.40

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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.