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Finding the Fourth Proportional to 266,471.57, 367,730.79 and 143,963.93

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Solution

The fourth proportional to 266,471.57, 367,730.79 and 143,963.93 is: 198,670.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,471.57 : 367,730.79 = 143,963.93 : x
  2. Step 2: Convert to fraction form
    266,471.57/367,730.79 = 143,963.93/x
  3. Step 3: Cross multiply
    266,471.57x = 367,730.79 × 143,963.93
  4. Step 4: Simplify right side
    266,471.57x = 52,939,970,089.87
  5. Step 5: Solve for x
    x = 52,939,970,089.87/266,471.57
  6. Step 6: Final answer
    x = 198,670.24

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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.