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Finding the Fourth Proportional to 15,894.42, 21,935.19 and 9,608.82

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Solution

The fourth proportional to 15,894.42, 21,935.19 and 9,608.82 is: 13,260.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,894.42 : 21,935.19 = 9,608.82 : x
  2. Step 2: Convert to fraction form
    15,894.42/21,935.19 = 9,608.82/x
  3. Step 3: Cross multiply
    15,894.42x = 21,935.19 × 9,608.82
  4. Step 4: Simplify right side
    15,894.42x = 210,771,292.38
  5. Step 5: Solve for x
    x = 210,771,292.38/15,894.42
  6. Step 6: Final answer
    x = 13,260.71

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1.5x scale

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.