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Finding the Fourth Proportional to 252,616.72, 348,613.92 and 139,439.44

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Solution

The fourth proportional to 252,616.72, 348,613.92 and 139,439.44 is: 192,428.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,616.72 : 348,613.92 = 139,439.44 : x
  2. Step 2: Convert to fraction form
    252,616.72/348,613.92 = 139,439.44/x
  3. Step 3: Cross multiply
    252,616.72x = 348,613.92 × 139,439.44
  4. Step 4: Simplify right side
    252,616.72x = 48,610,529,781.00
  5. Step 5: Solve for x
    x = 48,610,529,781.00/252,616.72
  6. Step 6: Final answer
    x = 192,428.00

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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.