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Finding the Fourth Proportional to 9,611.10, 13,243.64 and 7,089.22

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Solution

The fourth proportional to 9,611.10, 13,243.64 and 7,089.22 is: 9,768.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,611.10 : 13,243.64 = 7,089.22 : x
  2. Step 2: Convert to fraction form
    9,611.10/13,243.64 = 7,089.22/x
  3. Step 3: Cross multiply
    9,611.10x = 13,243.64 × 7,089.22
  4. Step 4: Simplify right side
    9,611.10x = 93,887,058.67
  5. Step 5: Solve for x
    x = 93,887,058.67/9,611.10
  6. Step 6: Final answer
    x = 9,768.61

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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.