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Finding the Fourth Proportional to 19,326.52, 28,989.51 and 5,475.52

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Solution

The fourth proportional to 19,326.52, 28,989.51 and 5,475.52 is: 8,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,326.52 : 28,989.51 = 5,475.52 : x
  2. Step 2: Convert to fraction form
    19,326.52/28,989.51 = 5,475.52/x
  3. Step 3: Cross multiply
    19,326.52x = 28,989.51 × 5,475.52
  4. Step 4: Simplify right side
    19,326.52x = 158,732,641.80
  5. Step 5: Solve for x
    x = 158,732,641.80/19,326.52
  6. Step 6: Final answer
    x = 8,213.20

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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.