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Finding the Fourth Proportional to 309,372.72, 426,935.16 and 175,236.72

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Solution

The fourth proportional to 309,372.72, 426,935.16 and 175,236.72 is: 241,827.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,372.72 : 426,935.16 = 175,236.72 : x
  2. Step 2: Convert to fraction form
    309,372.72/426,935.16 = 175,236.72/x
  3. Step 3: Cross multiply
    309,372.72x = 426,935.16 × 175,236.72
  4. Step 4: Simplify right side
    309,372.72x = 74,814,717,091.08
  5. Step 5: Solve for x
    x = 74,814,717,091.08/309,372.72
  6. Step 6: Final answer
    x = 241,827.13

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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.