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Finding the Fourth Proportional to 26,490.56, 39,746.03 and 11,689.02

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Solution

The fourth proportional to 26,490.56, 39,746.03 and 11,689.02 is: 17,538.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,490.56 : 39,746.03 = 11,689.02 : x
  2. Step 2: Convert to fraction form
    26,490.56/39,746.03 = 11,689.02/x
  3. Step 3: Cross multiply
    26,490.56x = 39,746.03 × 11,689.02
  4. Step 4: Simplify right side
    26,490.56x = 464,592,081.15
  5. Step 5: Solve for x
    x = 464,592,081.15/26,490.56
  6. Step 6: Final answer
    x = 17,538.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.