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Finding the Fourth Proportional to 18,758.55, 25,885.84 and 10,259.02

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Solution

The fourth proportional to 18,758.55, 25,885.84 and 10,259.02 is: 14,156.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.55 : 25,885.84 = 10,259.02 : x
  2. Step 2: Convert to fraction form
    18,758.55/25,885.84 = 10,259.02/x
  3. Step 3: Cross multiply
    18,758.55x = 25,885.84 × 10,259.02
  4. Step 4: Simplify right side
    18,758.55x = 265,563,310.97
  5. Step 5: Solve for x
    x = 265,563,310.97/18,758.55
  6. Step 6: Final answer
    x = 14,156.92

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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.