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Finding the Fourth Proportional to 3,707.48, 5,115.48 and 2,135.24

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Solution

The fourth proportional to 3,707.48, 5,115.48 and 2,135.24 is: 2,946.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,707.48 : 5,115.48 = 2,135.24 : x
  2. Step 2: Convert to fraction form
    3,707.48/5,115.48 = 2,135.24/x
  3. Step 3: Cross multiply
    3,707.48x = 5,115.48 × 2,135.24
  4. Step 4: Simplify right side
    3,707.48x = 10,922,777.52
  5. Step 5: Solve for x
    x = 10,922,777.52/3,707.48
  6. Step 6: Final answer
    x = 2,946.15

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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.