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Finding the Fourth Proportional to 15,706.92, 21,652.74 and 10,976.52

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Solution

The fourth proportional to 15,706.92, 21,652.74 and 10,976.52 is: 15,131.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,706.92 : 21,652.74 = 10,976.52 : x
  2. Step 2: Convert to fraction form
    15,706.92/21,652.74 = 10,976.52/x
  3. Step 3: Cross multiply
    15,706.92x = 21,652.74 × 10,976.52
  4. Step 4: Simplify right side
    15,706.92x = 237,671,733.66
  5. Step 5: Solve for x
    x = 237,671,733.66/15,706.92
  6. Step 6: Final answer
    x = 15,131.66

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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.