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Finding the Fourth Proportional to 363,935.76, 543,980.64 and 316,171.68

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Solution

The fourth proportional to 363,935.76, 543,980.64 and 316,171.68 is: 472,586.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,935.76 : 543,980.64 = 316,171.68 : x
  2. Step 2: Convert to fraction form
    363,935.76/543,980.64 = 316,171.68/x
  3. Step 3: Cross multiply
    363,935.76x = 543,980.64 × 316,171.68
  4. Step 4: Simplify right side
    363,935.76x = 171,991,272,836.28
  5. Step 5: Solve for x
    x = 171,991,272,836.28/363,935.76
  6. Step 6: Final answer
    x = 472,586.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.