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Finding the Fourth Proportional to 24,291.70, 36,389.55 and 21,405.30

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Solution

The fourth proportional to 24,291.70, 36,389.55 and 21,405.30 is: 32,065.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,291.70 : 36,389.55 = 21,405.30 : x
  2. Step 2: Convert to fraction form
    24,291.70/36,389.55 = 21,405.30/x
  3. Step 3: Cross multiply
    24,291.70x = 36,389.55 × 21,405.30
  4. Step 4: Simplify right side
    24,291.70x = 778,929,234.62
  5. Step 5: Solve for x
    x = 778,929,234.62/24,291.70
  6. Step 6: Final answer
    x = 32,065.65

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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.