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Finding the Fourth Proportional to 35,655.75, 49,217.90 and 20,751.75

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Solution

The fourth proportional to 35,655.75, 49,217.90 and 20,751.75 is: 28,644.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,655.75 : 49,217.90 = 20,751.75 : x
  2. Step 2: Convert to fraction form
    35,655.75/49,217.90 = 20,751.75/x
  3. Step 3: Cross multiply
    35,655.75x = 49,217.90 × 20,751.75
  4. Step 4: Simplify right side
    35,655.75x = 1,021,357,452.57
  5. Step 5: Solve for x
    x = 1,021,357,452.57/35,655.75
  6. Step 6: Final answer
    x = 28,644.96

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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.