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Finding the Fourth Proportional to 528,081.15, 792,121.73 and 291,885.15

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Solution

The fourth proportional to 528,081.15, 792,121.73 and 291,885.15 is: 437,827.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,081.15 : 792,121.73 = 291,885.15 : x
  2. Step 2: Convert to fraction form
    528,081.15/792,121.73 = 291,885.15/x
  3. Step 3: Cross multiply
    528,081.15x = 792,121.73 × 291,885.15
  4. Step 4: Simplify right side
    528,081.15x = 231,208,568,519.88
  5. Step 5: Solve for x
    x = 231,208,568,519.88/528,081.15
  6. Step 6: Final answer
    x = 437,827.73

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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.