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Finding the Fourth Proportional to 15,026.49, 20,736.92 and 8,312.24

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Solution

The fourth proportional to 15,026.49, 20,736.92 and 8,312.24 is: 11,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,026.49 : 20,736.92 = 8,312.24 : x
  2. Step 2: Convert to fraction form
    15,026.49/20,736.92 = 8,312.24/x
  3. Step 3: Cross multiply
    15,026.49x = 20,736.92 × 8,312.24
  4. Step 4: Simplify right side
    15,026.49x = 172,370,328.52
  5. Step 5: Solve for x
    x = 172,370,328.52/15,026.49
  6. Step 6: Final answer
    x = 11,471.10

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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.