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Finding the Fourth Proportional to 351,972.94, 486,123.51 and 238,598.86

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Solution

The fourth proportional to 351,972.94, 486,123.51 and 238,598.86 is: 329,538.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,972.94 : 486,123.51 = 238,598.86 : x
  2. Step 2: Convert to fraction form
    351,972.94/486,123.51 = 238,598.86/x
  3. Step 3: Cross multiply
    351,972.94x = 486,123.51 × 238,598.86
  4. Step 4: Simplify right side
    351,972.94x = 115,988,515,305.20
  5. Step 5: Solve for x
    x = 115,988,515,305.20/351,972.94
  6. Step 6: Final answer
    x = 329,538.16

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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.