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Finding the Fourth Proportional to 191,036.90, 286,861.35 and 151,919.30

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Solution

The fourth proportional to 191,036.90, 286,861.35 and 151,919.30 is: 228,122.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,036.90 : 286,861.35 = 151,919.30 : x
  2. Step 2: Convert to fraction form
    191,036.90/286,861.35 = 151,919.30/x
  3. Step 3: Cross multiply
    191,036.90x = 286,861.35 × 151,919.30
  4. Step 4: Simplify right side
    191,036.90x = 43,579,775,489.06
  5. Step 5: Solve for x
    x = 43,579,775,489.06/191,036.90
  6. Step 6: Final answer
    x = 228,122.29

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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.