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Finding the Fourth Proportional to 12,624.13, 18,929.92 and 7,360.95

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Solution

The fourth proportional to 12,624.13, 18,929.92 and 7,360.95 is: 11,037.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.13 : 18,929.92 = 7,360.95 : x
  2. Step 2: Convert to fraction form
    12,624.13/18,929.92 = 7,360.95/x
  3. Step 3: Cross multiply
    12,624.13x = 18,929.92 × 7,360.95
  4. Step 4: Simplify right side
    12,624.13x = 139,342,194.62
  5. Step 5: Solve for x
    x = 139,342,194.62/12,624.13
  6. Step 6: Final answer
    x = 11,037.77

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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.