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Finding the Fourth Proportional to 17,621.52, 24,290.10 and 13,355.52

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Solution

The fourth proportional to 17,621.52, 24,290.10 and 13,355.52 is: 18,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,621.52 : 24,290.10 = 13,355.52 : x
  2. Step 2: Convert to fraction form
    17,621.52/24,290.10 = 13,355.52/x
  3. Step 3: Cross multiply
    17,621.52x = 24,290.10 × 13,355.52
  4. Step 4: Simplify right side
    17,621.52x = 324,406,916.35
  5. Step 5: Solve for x
    x = 324,406,916.35/17,621.52
  6. Step 6: Final answer
    x = 18,409.70

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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.