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Finding the Fourth Proportional to 15,792.26, 21,793.47 and 8,718.53

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Solution

The fourth proportional to 15,792.26, 21,793.47 and 8,718.53 is: 12,031.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,792.26 : 21,793.47 = 8,718.53 : x
  2. Step 2: Convert to fraction form
    15,792.26/21,793.47 = 8,718.53/x
  3. Step 3: Cross multiply
    15,792.26x = 21,793.47 × 8,718.53
  4. Step 4: Simplify right side
    15,792.26x = 190,007,022.00
  5. Step 5: Solve for x
    x = 190,007,022.00/15,792.26
  6. Step 6: Final answer
    x = 12,031.65

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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.