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Finding the Fourth Proportional to 12,528.84, 17,285.88 and 7,222.94

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Solution

The fourth proportional to 12,528.84, 17,285.88 and 7,222.94 is: 9,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.84 : 17,285.88 = 7,222.94 : x
  2. Step 2: Convert to fraction form
    12,528.84/17,285.88 = 7,222.94/x
  3. Step 3: Cross multiply
    12,528.84x = 17,285.88 × 7,222.94
  4. Step 4: Simplify right side
    12,528.84x = 124,854,874.09
  5. Step 5: Solve for x
    x = 124,854,874.09/12,528.84
  6. Step 6: Final answer
    x = 9,965.40

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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.