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Finding the Fourth Proportional to 19,266.66, 28,888.11 and 10,819.89

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Solution

The fourth proportional to 19,266.66, 28,888.11 and 10,819.89 is: 16,223.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,266.66 : 28,888.11 = 10,819.89 : x
  2. Step 2: Convert to fraction form
    19,266.66/28,888.11 = 10,819.89/x
  3. Step 3: Cross multiply
    19,266.66x = 28,888.11 × 10,819.89
  4. Step 4: Simplify right side
    19,266.66x = 312,566,172.51
  5. Step 5: Solve for x
    x = 312,566,172.51/19,266.66
  6. Step 6: Final answer
    x = 16,223.16

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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.