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Finding the Fourth Proportional to 656,888.65, 984,859.86 and 403,645.84

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Solution

The fourth proportional to 656,888.65, 984,859.86 and 403,645.84 is: 605,178.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,888.65 : 984,859.86 = 403,645.84 : x
  2. Step 2: Convert to fraction form
    656,888.65/984,859.86 = 403,645.84/x
  3. Step 3: Cross multiply
    656,888.65x = 984,859.86 × 403,645.84
  4. Step 4: Simplify right side
    656,888.65x = 397,534,586,370.12
  5. Step 5: Solve for x
    x = 397,534,586,370.12/656,888.65
  6. Step 6: Final answer
    x = 605,178.04

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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.