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Finding the Fourth Proportional to 16,916.66, 25,378.08 and 5,670.89

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Solution

The fourth proportional to 16,916.66, 25,378.08 and 5,670.89 is: 8,507.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,916.66 : 25,378.08 = 5,670.89 : x
  2. Step 2: Convert to fraction form
    16,916.66/25,378.08 = 5,670.89/x
  3. Step 3: Cross multiply
    16,916.66x = 25,378.08 × 5,670.89
  4. Step 4: Simplify right side
    16,916.66x = 143,916,279.00
  5. Step 5: Solve for x
    x = 143,916,279.00/16,916.66
  6. Step 6: Final answer
    x = 8,507.37

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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.