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Finding the Fourth Proportional to 352,538.62, 486,509.15 and 191,393.71

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Solution

The fourth proportional to 352,538.62, 486,509.15 and 191,393.71 is: 264,126.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,538.62 : 486,509.15 = 191,393.71 : x
  2. Step 2: Convert to fraction form
    352,538.62/486,509.15 = 191,393.71/x
  3. Step 3: Cross multiply
    352,538.62x = 486,509.15 × 191,393.71
  4. Step 4: Simplify right side
    352,538.62x = 93,114,790,429.66
  5. Step 5: Solve for x
    x = 93,114,790,429.66/352,538.62
  6. Step 6: Final answer
    x = 264,126.50

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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.