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Finding the Fourth Proportional to 374,068.60, 561,181.74 and 121,329.42

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Solution

The fourth proportional to 374,068.60, 561,181.74 and 121,329.42 is: 182,019.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,068.60 : 561,181.74 = 121,329.42 : x
  2. Step 2: Convert to fraction form
    374,068.60/561,181.74 = 121,329.42/x
  3. Step 3: Cross multiply
    374,068.60x = 561,181.74 × 121,329.42
  4. Step 4: Simplify right side
    374,068.60x = 68,087,856,308.50
  5. Step 5: Solve for x
    x = 68,087,856,308.50/374,068.60
  6. Step 6: Final answer
    x = 182,019.71

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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.