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Finding the Fourth Proportional to 1,724.16, 2,585.60 and 736.86

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Solution

The fourth proportional to 1,724.16, 2,585.60 and 736.86 is: 1,105.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.16 : 2,585.60 = 736.86 : x
  2. Step 2: Convert to fraction form
    1,724.16/2,585.60 = 736.86/x
  3. Step 3: Cross multiply
    1,724.16x = 2,585.60 × 736.86
  4. Step 4: Simplify right side
    1,724.16x = 1,905,225.22
  5. Step 5: Solve for x
    x = 1,905,225.22/1,724.16
  6. Step 6: Final answer
    x = 1,105.02

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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.