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Finding the Fourth Proportional to 231,211.75, 346,817.64 and 64,999.75

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Solution

The fourth proportional to 231,211.75, 346,817.64 and 64,999.75 is: 97,499.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,211.75 : 346,817.64 = 64,999.75 : x
  2. Step 2: Convert to fraction form
    231,211.75/346,817.64 = 64,999.75/x
  3. Step 3: Cross multiply
    231,211.75x = 346,817.64 × 64,999.75
  4. Step 4: Simplify right side
    231,211.75x = 22,543,059,895.59
  5. Step 5: Solve for x
    x = 22,543,059,895.59/231,211.75
  6. Step 6: Final answer
    x = 97,499.63

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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.