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Finding the Fourth Proportional to 18,570.90, 25,627.76 and 10,072.99

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Solution

The fourth proportional to 18,570.90, 25,627.76 and 10,072.99 is: 13,900.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.90 : 25,627.76 = 10,072.99 : x
  2. Step 2: Convert to fraction form
    18,570.90/25,627.76 = 10,072.99/x
  3. Step 3: Cross multiply
    18,570.90x = 25,627.76 × 10,072.99
  4. Step 4: Simplify right side
    18,570.90x = 258,148,170.20
  5. Step 5: Solve for x
    x = 258,148,170.20/18,570.90
  6. Step 6: Final answer
    x = 13,900.68

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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.