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Finding the Fourth Proportional to 19,211.67, 26,512.65 and 10,828.17

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Solution

The fourth proportional to 19,211.67, 26,512.65 and 10,828.17 is: 14,943.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.67 : 26,512.65 = 10,828.17 : x
  2. Step 2: Convert to fraction form
    19,211.67/26,512.65 = 10,828.17/x
  3. Step 3: Cross multiply
    19,211.67x = 26,512.65 × 10,828.17
  4. Step 4: Simplify right side
    19,211.67x = 287,083,481.35
  5. Step 5: Solve for x
    x = 287,083,481.35/19,211.67
  6. Step 6: Final answer
    x = 14,943.18

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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.