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Finding the Fourth Proportional to 539,193.89, 808,811.49 and 139,824.20

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Solution

The fourth proportional to 539,193.89, 808,811.49 and 139,824.20 is: 209,741.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,193.89 : 808,811.49 = 139,824.20 : x
  2. Step 2: Convert to fraction form
    539,193.89/808,811.49 = 139,824.20/x
  3. Step 3: Cross multiply
    539,193.89x = 808,811.49 × 139,824.20
  4. Step 4: Simplify right side
    539,193.89x = 113,091,419,540.06
  5. Step 5: Solve for x
    x = 113,091,419,540.06/539,193.89
  6. Step 6: Final answer
    x = 209,741.66

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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.