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Finding the Fourth Proportional to 22,166.40, 30,590.16 and 12,607.84

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Solution

The fourth proportional to 22,166.40, 30,590.16 and 12,607.84 is: 17,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,166.40 : 30,590.16 = 12,607.84 : x
  2. Step 2: Convert to fraction form
    22,166.40/30,590.16 = 12,607.84/x
  3. Step 3: Cross multiply
    22,166.40x = 30,590.16 × 12,607.84
  4. Step 4: Simplify right side
    22,166.40x = 385,675,842.85
  5. Step 5: Solve for x
    x = 385,675,842.85/22,166.40
  6. Step 6: Final answer
    x = 17,399.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.