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Finding the Fourth Proportional to 8,306.70, 12,460.05 and 6,842.22

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Solution

The fourth proportional to 8,306.70, 12,460.05 and 6,842.22 is: 10,263.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,306.70 : 12,460.05 = 6,842.22 : x
  2. Step 2: Convert to fraction form
    8,306.70/12,460.05 = 6,842.22/x
  3. Step 3: Cross multiply
    8,306.70x = 12,460.05 × 6,842.22
  4. Step 4: Simplify right side
    8,306.70x = 85,254,403.31
  5. Step 5: Solve for x
    x = 85,254,403.31/8,306.70
  6. Step 6: Final answer
    x = 10,263.33

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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.