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Finding the Fourth Proportional to 18,393.63, 25,381.75 and 10,437.19

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Solution

The fourth proportional to 18,393.63, 25,381.75 and 10,437.19 is: 14,402.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.63 : 25,381.75 = 10,437.19 : x
  2. Step 2: Convert to fraction form
    18,393.63/25,381.75 = 10,437.19/x
  3. Step 3: Cross multiply
    18,393.63x = 25,381.75 × 10,437.19
  4. Step 4: Simplify right side
    18,393.63x = 264,914,147.28
  5. Step 5: Solve for x
    x = 264,914,147.28/18,393.63
  6. Step 6: Final answer
    x = 14,402.49

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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.