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Finding the Fourth Proportional to 5,608.94, 7,740.29 and 3,091.05

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Solution

The fourth proportional to 5,608.94, 7,740.29 and 3,091.05 is: 4,265.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.94 : 7,740.29 = 3,091.05 : x
  2. Step 2: Convert to fraction form
    5,608.94/7,740.29 = 3,091.05/x
  3. Step 3: Cross multiply
    5,608.94x = 7,740.29 × 3,091.05
  4. Step 4: Simplify right side
    5,608.94x = 23,925,631.13
  5. Step 5: Solve for x
    x = 23,925,631.13/5,608.94
  6. Step 6: Final answer
    x = 4,265.63

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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.