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Finding the Fourth Proportional to 17,811.80, 26,717.70 and 17,053.40

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Solution

The fourth proportional to 17,811.80, 26,717.70 and 17,053.40 is: 25,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,811.80 : 26,717.70 = 17,053.40 : x
  2. Step 2: Convert to fraction form
    17,811.80/26,717.70 = 17,053.40/x
  3. Step 3: Cross multiply
    17,811.80x = 26,717.70 × 17,053.40
  4. Step 4: Simplify right side
    17,811.80x = 455,627,625.18
  5. Step 5: Solve for x
    x = 455,627,625.18/17,811.80
  6. Step 6: Final answer
    x = 25,580.10

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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.