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Finding the Fourth Proportional to 539,076.60, 808,809.30 and 519,636.60

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Solution

The fourth proportional to 539,076.60, 808,809.30 and 519,636.60 is: 779,642.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,076.60 : 808,809.30 = 519,636.60 : x
  2. Step 2: Convert to fraction form
    539,076.60/808,809.30 = 519,636.60/x
  3. Step 3: Cross multiply
    539,076.60x = 808,809.30 × 519,636.60
  4. Step 4: Simplify right side
    539,076.60x = 420,286,914,700.38
  5. Step 5: Solve for x
    x = 420,286,914,700.38/539,076.60
  6. Step 6: Final answer
    x = 779,642.29

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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.