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Finding the Fourth Proportional to 5,509.63, 7,601.56 and 3,151.32

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Solution

The fourth proportional to 5,509.63, 7,601.56 and 3,151.32 is: 4,347.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.63 : 7,601.56 = 3,151.32 : x
  2. Step 2: Convert to fraction form
    5,509.63/7,601.56 = 3,151.32/x
  3. Step 3: Cross multiply
    5,509.63x = 7,601.56 × 3,151.32
  4. Step 4: Simplify right side
    5,509.63x = 23,954,948.06
  5. Step 5: Solve for x
    x = 23,954,948.06/5,509.63
  6. Step 6: Final answer
    x = 4,347.83

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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.