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Finding the Fourth Proportional to 508,578.75, 701,860.55 and 282,224.25

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Solution

The fourth proportional to 508,578.75, 701,860.55 and 282,224.25 is: 389,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,578.75 : 701,860.55 = 282,224.25 : x
  2. Step 2: Convert to fraction form
    508,578.75/701,860.55 = 282,224.25/x
  3. Step 3: Cross multiply
    508,578.75x = 701,860.55 × 282,224.25
  4. Step 4: Simplify right side
    508,578.75x = 198,082,065,917.22
  5. Step 5: Solve for x
    x = 198,082,065,917.22/508,578.75
  6. Step 6: Final answer
    x = 389,481.60

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