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Finding the Fourth Proportional to 698,441.16, 963,855.54 and 396,637.32

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Solution

The fourth proportional to 698,441.16, 963,855.54 and 396,637.32 is: 547,363.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,441.16 : 963,855.54 = 396,637.32 : x
  2. Step 2: Convert to fraction form
    698,441.16/963,855.54 = 396,637.32/x
  3. Step 3: Cross multiply
    698,441.16x = 963,855.54 × 396,637.32
  4. Step 4: Simplify right side
    698,441.16x = 382,301,078,252.75
  5. Step 5: Solve for x
    x = 382,301,078,252.75/698,441.16
  6. Step 6: Final answer
    x = 547,363.33

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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.