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Finding the Fourth Proportional to 4,945.97, 7,418.94 and 1,248.50

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Solution

The fourth proportional to 4,945.97, 7,418.94 and 1,248.50 is: 1,872.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,945.97 : 7,418.94 = 1,248.50 : x
  2. Step 2: Convert to fraction form
    4,945.97/7,418.94 = 1,248.50/x
  3. Step 3: Cross multiply
    4,945.97x = 7,418.94 × 1,248.50
  4. Step 4: Simplify right side
    4,945.97x = 9,262,509.50
  5. Step 5: Solve for x
    x = 9,262,509.50/4,945.97
  6. Step 6: Final answer
    x = 1,872.74

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Half scale
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Double scale
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Similar ratio
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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.