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Finding the Fourth Proportional to 656,888.78, 984,860.05 and 403,645.97

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Solution

The fourth proportional to 656,888.78, 984,860.05 and 403,645.97 is: 605,178.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,888.78 : 984,860.05 = 403,645.97 : x
  2. Step 2: Convert to fraction form
    656,888.78/984,860.05 = 403,645.97/x
  3. Step 3: Cross multiply
    656,888.78x = 984,860.05 × 403,645.97
  4. Step 4: Simplify right side
    656,888.78x = 397,534,785,776.76
  5. Step 5: Solve for x
    x = 397,534,785,776.76/656,888.78
  6. Step 6: Final answer
    x = 605,178.23

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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.