Home / 51,185.36-76,778.04-19,998.76

Finding the Fourth Proportional to 51,185.36, 76,778.04 and 19,998.76

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Solution

The fourth proportional to 51,185.36, 76,778.04 and 19,998.76 is: 29,998.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,185.36 : 76,778.04 = 19,998.76 : x
  2. Step 2: Convert to fraction form
    51,185.36/76,778.04 = 19,998.76/x
  3. Step 3: Cross multiply
    51,185.36x = 76,778.04 × 19,998.76
  4. Step 4: Simplify right side
    51,185.36x = 1,535,465,595.23
  5. Step 5: Solve for x
    x = 1,535,465,595.23/51,185.36
  6. Step 6: Final answer
    x = 29,998.14

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