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Finding the Fourth Proportional to 698,400.96, 963,816.48 and 392,530.56

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Solution

The fourth proportional to 698,400.96, 963,816.48 and 392,530.56 is: 541,705.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,400.96 : 963,816.48 = 392,530.56 : x
  2. Step 2: Convert to fraction form
    698,400.96/963,816.48 = 392,530.56/x
  3. Step 3: Cross multiply
    698,400.96x = 963,816.48 × 392,530.56
  4. Step 4: Simplify right side
    698,400.96x = 378,327,422,631.63
  5. Step 5: Solve for x
    x = 378,327,422,631.63/698,400.96
  6. Step 6: Final answer
    x = 541,705.19

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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.