Home / 445,499.55-668,249.33-129,988.35

Finding the Fourth Proportional to 445,499.55, 668,249.33 and 129,988.35

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Solution

The fourth proportional to 445,499.55, 668,249.33 and 129,988.35 is: 194,982.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,499.55 : 668,249.33 = 129,988.35 : x
  2. Step 2: Convert to fraction form
    445,499.55/668,249.33 = 129,988.35/x
  3. Step 3: Cross multiply
    445,499.55x = 668,249.33 × 129,988.35
  4. Step 4: Simplify right side
    445,499.55x = 86,864,627,145.36
  5. Step 5: Solve for x
    x = 86,864,627,145.36/445,499.55
  6. Step 6: Final answer
    x = 194,982.53

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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.