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Finding the Fourth Proportional to 3,707.90, 5,561.12 and 1,367.90

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Solution

The fourth proportional to 3,707.90, 5,561.12 and 1,367.90 is: 2,051.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,707.90 : 5,561.12 = 1,367.90 : x
  2. Step 2: Convert to fraction form
    3,707.90/5,561.12 = 1,367.90/x
  3. Step 3: Cross multiply
    3,707.90x = 5,561.12 × 1,367.90
  4. Step 4: Simplify right side
    3,707.90x = 7,607,056.05
  5. Step 5: Solve for x
    x = 7,607,056.05/3,707.90
  6. Step 6: Final answer
    x = 2,051.58

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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.