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Finding the Fourth Proportional to 7,998.50, 12,058.65 and 7,434.74

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Solution

The fourth proportional to 7,998.50, 12,058.65 and 7,434.74 is: 11,208.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.50 : 12,058.65 = 7,434.74 : x
  2. Step 2: Convert to fraction form
    7,998.50/12,058.65 = 7,434.74/x
  3. Step 3: Cross multiply
    7,998.50x = 12,058.65 × 7,434.74
  4. Step 4: Simplify right side
    7,998.50x = 89,652,867.21
  5. Step 5: Solve for x
    x = 89,652,867.21/7,998.50
  6. Step 6: Final answer
    x = 11,208.72

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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 (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.