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Finding the Fourth Proportional to 11,539.16, 15,914.98 and 8,352.92

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Solution

The fourth proportional to 11,539.16, 15,914.98 and 8,352.92 is: 11,520.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,539.16 : 15,914.98 = 8,352.92 : x
  2. Step 2: Convert to fraction form
    11,539.16/15,914.98 = 8,352.92/x
  3. Step 3: Cross multiply
    11,539.16x = 15,914.98 × 8,352.92
  4. Step 4: Simplify right side
    11,539.16x = 132,936,554.74
  5. Step 5: Solve for x
    x = 132,936,554.74/11,539.16
  6. Step 6: Final answer
    x = 11,520.47

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