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Finding the Fourth Proportional to 627,121.60, 939,645.60 and 533,809.60

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Solution

The fourth proportional to 627,121.60, 939,645.60 and 533,809.60 is: 799,831.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,121.60 : 939,645.60 = 533,809.60 : x
  2. Step 2: Convert to fraction form
    627,121.60/939,645.60 = 533,809.60/x
  3. Step 3: Cross multiply
    627,121.60x = 939,645.60 × 533,809.60
  4. Step 4: Simplify right side
    627,121.60x = 501,591,841,877.76
  5. Step 5: Solve for x
    x = 501,591,841,877.76/627,121.60
  6. Step 6: Final answer
    x = 799,831.87

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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.