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Finding the Fourth Proportional to 487,112.88, 672,194.64 and 266,346.14

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Solution

The fourth proportional to 487,112.88, 672,194.64 and 266,346.14 is: 367,546.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,112.88 : 672,194.64 = 266,346.14 : x
  2. Step 2: Convert to fraction form
    487,112.88/672,194.64 = 266,346.14/x
  3. Step 3: Cross multiply
    487,112.88x = 672,194.64 × 266,346.14
  4. Step 4: Simplify right side
    487,112.88x = 179,036,444,331.72
  5. Step 5: Solve for x
    x = 179,036,444,331.72/487,112.88
  6. Step 6: Final answer
    x = 367,546.11

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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.