Home / 513,210.33-769,815.90-139,233.33

Finding the Fourth Proportional to 513,210.33, 769,815.90 and 139,233.33

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Solution

The fourth proportional to 513,210.33, 769,815.90 and 139,233.33 is: 208,850.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,210.33 : 769,815.90 = 139,233.33 : x
  2. Step 2: Convert to fraction form
    513,210.33/769,815.90 = 139,233.33/x
  3. Step 3: Cross multiply
    513,210.33x = 769,815.90 × 139,233.33
  4. Step 4: Simplify right side
    513,210.33x = 107,184,031,243.95
  5. Step 5: Solve for x
    x = 107,184,031,243.95/513,210.33
  6. Step 6: Final answer
    x = 208,850.10

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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.