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Finding the Fourth Proportional to 15,751.13, 21,736.55 and 9,465.53

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Solution

The fourth proportional to 15,751.13, 21,736.55 and 9,465.53 is: 13,062.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,751.13 : 21,736.55 = 9,465.53 : x
  2. Step 2: Convert to fraction form
    15,751.13/21,736.55 = 9,465.53/x
  3. Step 3: Cross multiply
    15,751.13x = 21,736.55 × 9,465.53
  4. Step 4: Simplify right side
    15,751.13x = 205,747,881.10
  5. Step 5: Solve for x
    x = 205,747,881.10/15,751.13
  6. Step 6: Final answer
    x = 13,062.42

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Why These Related Problems?

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