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Finding the Fourth Proportional to 18,856.87, 26,019.59 and 10,897.56

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Solution

The fourth proportional to 18,856.87, 26,019.59 and 10,897.56 is: 15,036.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,856.87 : 26,019.59 = 10,897.56 : x
  2. Step 2: Convert to fraction form
    18,856.87/26,019.59 = 10,897.56/x
  3. Step 3: Cross multiply
    18,856.87x = 26,019.59 × 10,897.56
  4. Step 4: Simplify right side
    18,856.87x = 283,550,070.44
  5. Step 5: Solve for x
    x = 283,550,070.44/18,856.87
  6. Step 6: Final answer
    x = 15,036.96

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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.