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Finding the Fourth Proportional to 12,553.68, 18,830.40 and 7,624.68

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Solution

The fourth proportional to 12,553.68, 18,830.40 and 7,624.68 is: 11,436.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,553.68 : 18,830.40 = 7,624.68 : x
  2. Step 2: Convert to fraction form
    12,553.68/18,830.40 = 7,624.68/x
  3. Step 3: Cross multiply
    12,553.68x = 18,830.40 × 7,624.68
  4. Step 4: Simplify right side
    12,553.68x = 143,575,774.27
  5. Step 5: Solve for x
    x = 143,575,774.27/12,553.68
  6. Step 6: Final answer
    x = 11,436.95

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.