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Finding the Fourth Proportional to 620,656.66, 929,693.30 and 394,898.79

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Solution

The fourth proportional to 620,656.66, 929,693.30 and 394,898.79 is: 591,526.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,656.66 : 929,693.30 = 394,898.79 : x
  2. Step 2: Convert to fraction form
    620,656.66/929,693.30 = 394,898.79/x
  3. Step 3: Cross multiply
    620,656.66x = 929,693.30 × 394,898.79
  4. Step 4: Simplify right side
    620,656.66x = 367,134,760,752.96
  5. Step 5: Solve for x
    x = 367,134,760,752.96/620,656.66
  6. Step 6: Final answer
    x = 591,526.34

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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.