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Finding the Fourth Proportional to 17,830.55, 24,653.13 and 15,616.21

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Solution

The fourth proportional to 17,830.55, 24,653.13 and 15,616.21 is: 21,591.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,830.55 : 24,653.13 = 15,616.21 : x
  2. Step 2: Convert to fraction form
    17,830.55/24,653.13 = 15,616.21/x
  3. Step 3: Cross multiply
    17,830.55x = 24,653.13 × 15,616.21
  4. Step 4: Simplify right side
    17,830.55x = 384,988,455.24
  5. Step 5: Solve for x
    x = 384,988,455.24/17,830.55
  6. Step 6: Final answer
    x = 21,591.51

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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.