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Finding the Fourth Proportional to 17,061.90, 25,556.40 and 14,145.90

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Solution

The fourth proportional to 17,061.90, 25,556.40 and 14,145.90 is: 21,188.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,061.90 : 25,556.40 = 14,145.90 : x
  2. Step 2: Convert to fraction form
    17,061.90/25,556.40 = 14,145.90/x
  3. Step 3: Cross multiply
    17,061.90x = 25,556.40 × 14,145.90
  4. Step 4: Simplify right side
    17,061.90x = 361,518,278.76
  5. Step 5: Solve for x
    x = 361,518,278.76/17,061.90
  6. Step 6: Final answer
    x = 21,188.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.