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Finding the Fourth Proportional to 403,890.70, 605,787.45 and 167,208.70

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Solution

The fourth proportional to 403,890.70, 605,787.45 and 167,208.70 is: 250,792.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,890.70 : 605,787.45 = 167,208.70 : x
  2. Step 2: Convert to fraction form
    403,890.70/605,787.45 = 167,208.70/x
  3. Step 3: Cross multiply
    403,890.70x = 605,787.45 × 167,208.70
  4. Step 4: Simplify right side
    403,890.70x = 101,292,931,990.82
  5. Step 5: Solve for x
    x = 101,292,931,990.82/403,890.70
  6. Step 6: Final answer
    x = 250,792.93

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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.