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Finding the Fourth Proportional to 1,503.93, 2,255.90 and 1,039.17

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Solution

The fourth proportional to 1,503.93, 2,255.90 and 1,039.17 is: 1,558.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,503.93 : 2,255.90 = 1,039.17 : x
  2. Step 2: Convert to fraction form
    1,503.93/2,255.90 = 1,039.17/x
  3. Step 3: Cross multiply
    1,503.93x = 2,255.90 × 1,039.17
  4. Step 4: Simplify right side
    1,503.93x = 2,344,258.41
  5. Step 5: Solve for x
    x = 2,344,258.41/1,503.93
  6. Step 6: Final answer
    x = 1,558.76

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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.