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Finding the Fourth Proportional to 61,094.16, 91,641.17 and 16,721.28

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Solution

The fourth proportional to 61,094.16, 91,641.17 and 16,721.28 is: 25,081.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,094.16 : 91,641.17 = 16,721.28 : x
  2. Step 2: Convert to fraction form
    61,094.16/91,641.17 = 16,721.28/x
  3. Step 3: Cross multiply
    61,094.16x = 91,641.17 × 16,721.28
  4. Step 4: Simplify right side
    61,094.16x = 1,532,357,704.90
  5. Step 5: Solve for x
    x = 1,532,357,704.90/61,094.16
  6. Step 6: Final answer
    x = 25,081.90

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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.