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Finding the Fourth Proportional to 266,661.91, 367,980.53 and 151,967.43

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Solution

The fourth proportional to 266,661.91, 367,980.53 and 151,967.43 is: 209,707.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,661.91 : 367,980.53 = 151,967.43 : x
  2. Step 2: Convert to fraction form
    266,661.91/367,980.53 = 151,967.43/x
  3. Step 3: Cross multiply
    266,661.91x = 367,980.53 × 151,967.43
  4. Step 4: Simplify right side
    266,661.91x = 55,921,055,434.14
  5. Step 5: Solve for x
    x = 55,921,055,434.14/266,661.91
  6. Step 6: Final answer
    x = 209,707.70

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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.