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Finding the Fourth Proportional to 7,998.60, 11,038.05 and 4,461.90

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Solution

The fourth proportional to 7,998.60, 11,038.05 and 4,461.90 is: 6,157.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.60 : 11,038.05 = 4,461.90 : x
  2. Step 2: Convert to fraction form
    7,998.60/11,038.05 = 4,461.90/x
  3. Step 3: Cross multiply
    7,998.60x = 11,038.05 × 4,461.90
  4. Step 4: Simplify right side
    7,998.60x = 49,250,675.30
  5. Step 5: Solve for x
    x = 49,250,675.30/7,998.60
  6. Step 6: Final answer
    x = 6,157.41

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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.