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Finding the Fourth Proportional to 21,026.88, 29,016.88 and 11,595.52

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Solution

The fourth proportional to 21,026.88, 29,016.88 and 11,595.52 is: 16,001.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.88 : 29,016.88 = 11,595.52 : x
  2. Step 2: Convert to fraction form
    21,026.88/29,016.88 = 11,595.52/x
  3. Step 3: Cross multiply
    21,026.88x = 29,016.88 × 11,595.52
  4. Step 4: Simplify right side
    21,026.88x = 336,465,812.38
  5. Step 5: Solve for x
    x = 336,465,812.38/21,026.88
  6. Step 6: Final answer
    x = 16,001.70

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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.