Home / 82,070.62-123,105.93-19,741.12

Finding the Fourth Proportional to 82,070.62, 123,105.93 and 19,741.12

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Solution

The fourth proportional to 82,070.62, 123,105.93 and 19,741.12 is: 29,611.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,070.62 : 123,105.93 = 19,741.12 : x
  2. Step 2: Convert to fraction form
    82,070.62/123,105.93 = 19,741.12/x
  3. Step 3: Cross multiply
    82,070.62x = 123,105.93 × 19,741.12
  4. Step 4: Simplify right side
    82,070.62x = 2,430,248,936.84
  5. Step 5: Solve for x
    x = 2,430,248,936.84/82,070.62
  6. Step 6: Final answer
    x = 29,611.68

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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.