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Finding the Fourth Proportional to 518,766.82, 778,084.62 and 139,717.84

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Solution

The fourth proportional to 518,766.82, 778,084.62 and 139,717.84 is: 209,559.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,766.82 : 778,084.62 = 139,717.84 : x
  2. Step 2: Convert to fraction form
    518,766.82/778,084.62 = 139,717.84/x
  3. Step 3: Cross multiply
    518,766.82x = 778,084.62 × 139,717.84
  4. Step 4: Simplify right side
    518,766.82x = 108,712,302,443.62
  5. Step 5: Solve for x
    x = 108,712,302,443.62/518,766.82
  6. Step 6: Final answer
    x = 209,559.09

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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.