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Finding the Fourth Proportional to 539,141.60, 808,906.80 and 519,701.60

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Solution

The fourth proportional to 539,141.60, 808,906.80 and 519,701.60 is: 779,739.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,141.60 : 808,906.80 = 519,701.60 : x
  2. Step 2: Convert to fraction form
    539,141.60/808,906.80 = 519,701.60/x
  3. Step 3: Cross multiply
    539,141.60x = 808,906.80 × 519,701.60
  4. Step 4: Simplify right side
    539,141.60x = 420,390,158,210.88
  5. Step 5: Solve for x
    x = 420,390,158,210.88/539,141.60
  6. Step 6: Final answer
    x = 779,739.79

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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.