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Finding the Fourth Proportional to 18,893.59, 26,076.76 and 12,508.92

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Solution

The fourth proportional to 18,893.59, 26,076.76 and 12,508.92 is: 17,264.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.59 : 26,076.76 = 12,508.92 : x
  2. Step 2: Convert to fraction form
    18,893.59/26,076.76 = 12,508.92/x
  3. Step 3: Cross multiply
    18,893.59x = 26,076.76 × 12,508.92
  4. Step 4: Simplify right side
    18,893.59x = 326,191,974.32
  5. Step 5: Solve for x
    x = 326,191,974.32/18,893.59
  6. Step 6: Final answer
    x = 17,264.69

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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.