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Finding the Fourth Proportional to 242,644.40, 363,901.80 and 74,164.40

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Solution

The fourth proportional to 242,644.40, 363,901.80 and 74,164.40 is: 111,226.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,644.40 : 363,901.80 = 74,164.40 : x
  2. Step 2: Convert to fraction form
    242,644.40/363,901.80 = 74,164.40/x
  3. Step 3: Cross multiply
    242,644.40x = 363,901.80 × 74,164.40
  4. Step 4: Simplify right side
    242,644.40x = 26,988,558,655.92
  5. Step 5: Solve for x
    x = 26,988,558,655.92/242,644.40
  6. Step 6: Final answer
    x = 111,226.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.