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Finding the Fourth Proportional to 15,036.78, 20,751.39 and 9,295.50

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Solution

The fourth proportional to 15,036.78, 20,751.39 and 9,295.50 is: 12,828.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036.78 : 20,751.39 = 9,295.50 : x
  2. Step 2: Convert to fraction form
    15,036.78/20,751.39 = 9,295.50/x
  3. Step 3: Cross multiply
    15,036.78x = 20,751.39 × 9,295.50
  4. Step 4: Simplify right side
    15,036.78x = 192,894,545.75
  5. Step 5: Solve for x
    x = 192,894,545.75/15,036.78
  6. Step 6: Final answer
    x = 12,828.18

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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.