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Finding the Fourth Proportional to 18,748.03, 25,872.56 and 12,700.12

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Solution

The fourth proportional to 18,748.03, 25,872.56 and 12,700.12 is: 17,526.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748.03 : 25,872.56 = 12,700.12 : x
  2. Step 2: Convert to fraction form
    18,748.03/25,872.56 = 12,700.12/x
  3. Step 3: Cross multiply
    18,748.03x = 25,872.56 × 12,700.12
  4. Step 4: Simplify right side
    18,748.03x = 328,584,706.87
  5. Step 5: Solve for x
    x = 328,584,706.87/18,748.03
  6. Step 6: Final answer
    x = 17,526.36

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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.