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Finding the Fourth Proportional to 19,014.66, 28,506.56 and 7,929.66

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Solution

The fourth proportional to 19,014.66, 28,506.56 and 7,929.66 is: 11,888.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,014.66 : 28,506.56 = 7,929.66 : x
  2. Step 2: Convert to fraction form
    19,014.66/28,506.56 = 7,929.66/x
  3. Step 3: Cross multiply
    19,014.66x = 28,506.56 × 7,929.66
  4. Step 4: Simplify right side
    19,014.66x = 226,047,328.57
  5. Step 5: Solve for x
    x = 226,047,328.57/19,014.66
  6. Step 6: Final answer
    x = 11,888.06

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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.