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Finding the Fourth Proportional to 19,391.09, 29,085.01 and 7,701.17

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Solution

The fourth proportional to 19,391.09, 29,085.01 and 7,701.17 is: 11,551.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,391.09 : 29,085.01 = 7,701.17 : x
  2. Step 2: Convert to fraction form
    19,391.09/29,085.01 = 7,701.17/x
  3. Step 3: Cross multiply
    19,391.09x = 29,085.01 × 7,701.17
  4. Step 4: Simplify right side
    19,391.09x = 223,988,441.78
  5. Step 5: Solve for x
    x = 223,988,441.78/19,391.09
  6. Step 6: Final answer
    x = 11,551.10

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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.