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Finding the Fourth Proportional to 243,881.09, 365,784.72 and 66,402.09

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Solution

The fourth proportional to 243,881.09, 365,784.72 and 66,402.09 is: 99,593.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,881.09 : 365,784.72 = 66,402.09 : x
  2. Step 2: Convert to fraction form
    243,881.09/365,784.72 = 66,402.09/x
  3. Step 3: Cross multiply
    243,881.09x = 365,784.72 × 66,402.09
  4. Step 4: Simplify right side
    243,881.09x = 24,288,869,898.06
  5. Step 5: Solve for x
    x = 24,288,869,898.06/243,881.09
  6. Step 6: Final answer
    x = 99,593.08

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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.