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Finding the Fourth Proportional to 271,545.30, 374,706.72 and 156,815.28

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Solution

The fourth proportional to 271,545.30, 374,706.72 and 156,815.28 is: 216,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,545.30 : 374,706.72 = 156,815.28 : x
  2. Step 2: Convert to fraction form
    271,545.30/374,706.72 = 156,815.28/x
  3. Step 3: Cross multiply
    271,545.30x = 374,706.72 × 156,815.28
  4. Step 4: Simplify right side
    271,545.30x = 58,759,739,214.68
  5. Step 5: Solve for x
    x = 58,759,739,214.68/271,545.30
  6. Step 6: Final answer
    x = 216,390.19

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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.