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Finding the Fourth Proportional to 8,059.59, 11,121.48 and 6,385.14

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Solution

The fourth proportional to 8,059.59, 11,121.48 and 6,385.14 is: 8,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,059.59 : 11,121.48 = 6,385.14 : x
  2. Step 2: Convert to fraction form
    8,059.59/11,121.48 = 6,385.14/x
  3. Step 3: Cross multiply
    8,059.59x = 11,121.48 × 6,385.14
  4. Step 4: Simplify right side
    8,059.59x = 71,012,206.81
  5. Step 5: Solve for x
    x = 71,012,206.81/8,059.59
  6. Step 6: Final answer
    x = 8,810.90

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Half scale
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Double scale
Find fourth proportional to 8,060.59, 11,122.86 and 6,386.14
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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.