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Finding the Fourth Proportional to 5,160.69, 7,741.55 and 1,874.04

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Solution

The fourth proportional to 5,160.69, 7,741.55 and 1,874.04 is: 2,811.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.69 : 7,741.55 = 1,874.04 : x
  2. Step 2: Convert to fraction form
    5,160.69/7,741.55 = 1,874.04/x
  3. Step 3: Cross multiply
    5,160.69x = 7,741.55 × 1,874.04
  4. Step 4: Simplify right side
    5,160.69x = 14,507,964.99
  5. Step 5: Solve for x
    x = 14,507,964.99/5,160.69
  6. Step 6: Final answer
    x = 2,811.25

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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.