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Finding the Fourth Proportional to 698,266.72, 963,690.24 and 392,343.76

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Solution

The fourth proportional to 698,266.72, 963,690.24 and 392,343.76 is: 541,480.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,266.72 : 963,690.24 = 392,343.76 : x
  2. Step 2: Convert to fraction form
    698,266.72/963,690.24 = 392,343.76/x
  3. Step 3: Cross multiply
    698,266.72x = 963,690.24 × 392,343.76
  4. Step 4: Simplify right side
    698,266.72x = 378,097,852,236.90
  5. Step 5: Solve for x
    x = 378,097,852,236.90/698,266.72
  6. Step 6: Final answer
    x = 541,480.56

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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.