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Finding the Fourth Proportional to 681,124.64, 939,952.24 and 394,810.81

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Solution

The fourth proportional to 681,124.64, 939,952.24 and 394,810.81 is: 544,839.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,124.64 : 939,952.24 = 394,810.81 : x
  2. Step 2: Convert to fraction form
    681,124.64/939,952.24 = 394,810.81/x
  3. Step 3: Cross multiply
    681,124.64x = 939,952.24 × 394,810.81
  4. Step 4: Simplify right side
    681,124.64x = 371,103,301,898.81
  5. Step 5: Solve for x
    x = 371,103,301,898.81/681,124.64
  6. Step 6: Final answer
    x = 544,839.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.