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Finding the Fourth Proportional to 374,611.80, 561,917.70 and 121,916.10

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Solution

The fourth proportional to 374,611.80, 561,917.70 and 121,916.10 is: 182,874.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,611.80 : 561,917.70 = 121,916.10 : x
  2. Step 2: Convert to fraction form
    374,611.80/561,917.70 = 121,916.10/x
  3. Step 3: Cross multiply
    374,611.80x = 561,917.70 × 121,916.10
  4. Step 4: Simplify right side
    374,611.80x = 68,506,814,504.97
  5. Step 5: Solve for x
    x = 68,506,814,504.97/374,611.80
  6. Step 6: Final answer
    x = 182,874.15

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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.