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Finding the Fourth Proportional to 16,666.01, 24,986.70 and 7,890.65

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Solution

The fourth proportional to 16,666.01, 24,986.70 and 7,890.65 is: 11,830.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,666.01 : 24,986.70 = 7,890.65 : x
  2. Step 2: Convert to fraction form
    16,666.01/24,986.70 = 7,890.65/x
  3. Step 3: Cross multiply
    16,666.01x = 24,986.70 × 7,890.65
  4. Step 4: Simplify right side
    16,666.01x = 197,161,179.42
  5. Step 5: Solve for x
    x = 197,161,179.42/16,666.01
  6. Step 6: Final answer
    x = 11,830.14

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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.