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Finding the Fourth Proportional to 620,657.04, 929,693.86 and 394,899.17

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Solution

The fourth proportional to 620,657.04, 929,693.86 and 394,899.17 is: 591,526.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,657.04 : 929,693.86 = 394,899.17 : x
  2. Step 2: Convert to fraction form
    620,657.04/929,693.86 = 394,899.17/x
  3. Step 3: Cross multiply
    620,657.04x = 929,693.86 × 394,899.17
  4. Step 4: Simplify right side
    620,657.04x = 367,135,331,518.73
  5. Step 5: Solve for x
    x = 367,135,331,518.73/620,657.04
  6. Step 6: Final answer
    x = 591,526.90

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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.