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Finding the Fourth Proportional to 17,166.60, 25,749.90 and 15,611.40

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Solution

The fourth proportional to 17,166.60, 25,749.90 and 15,611.40 is: 23,417.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,166.60 : 25,749.90 = 15,611.40 : x
  2. Step 2: Convert to fraction form
    17,166.60/25,749.90 = 15,611.40/x
  3. Step 3: Cross multiply
    17,166.60x = 25,749.90 × 15,611.40
  4. Step 4: Simplify right side
    17,166.60x = 401,991,988.86
  5. Step 5: Solve for x
    x = 401,991,988.86/17,166.60
  6. Step 6: Final answer
    x = 23,417.10

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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.