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Finding the Fourth Proportional to 8,757.98, 13,085.67 and 8,451.74

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Solution

The fourth proportional to 8,757.98, 13,085.67 and 8,451.74 is: 12,628.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.98 : 13,085.67 = 8,451.74 : x
  2. Step 2: Convert to fraction form
    8,757.98/13,085.67 = 8,451.74/x
  3. Step 3: Cross multiply
    8,757.98x = 13,085.67 × 8,451.74
  4. Step 4: Simplify right side
    8,757.98x = 110,596,638.31
  5. Step 5: Solve for x
    x = 110,596,638.31/8,757.98
  6. Step 6: Final answer
    x = 12,628.10

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