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Finding the Fourth Proportional to 7,994.70, 11,032.20 and 4,457.70

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Solution

The fourth proportional to 7,994.70, 11,032.20 and 4,457.70 is: 6,151.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,994.70 : 11,032.20 = 4,457.70 : x
  2. Step 2: Convert to fraction form
    7,994.70/11,032.20 = 4,457.70/x
  3. Step 3: Cross multiply
    7,994.70x = 11,032.20 × 4,457.70
  4. Step 4: Simplify right side
    7,994.70x = 49,178,237.94
  5. Step 5: Solve for x
    x = 49,178,237.94/7,994.70
  6. Step 6: Final answer
    x = 6,151.36

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Half scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.