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Finding the Fourth Proportional to 2,753.08, 4,129.20 and 904.19

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Solution

The fourth proportional to 2,753.08, 4,129.20 and 904.19 is: 1,356.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.08 : 4,129.20 = 904.19 : x
  2. Step 2: Convert to fraction form
    2,753.08/4,129.20 = 904.19/x
  3. Step 3: Cross multiply
    2,753.08x = 4,129.20 × 904.19
  4. Step 4: Simplify right side
    2,753.08x = 3,733,560.70
  5. Step 5: Solve for x
    x = 3,733,560.70/2,753.08
  6. Step 6: Final answer
    x = 1,356.14

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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.