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Finding the Fourth Proportional to 242,655.72, 363,984.48 and 74,175.40

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Solution

The fourth proportional to 242,655.72, 363,984.48 and 74,175.40 is: 111,263.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,655.72 : 363,984.48 = 74,175.40 : x
  2. Step 2: Convert to fraction form
    242,655.72/363,984.48 = 74,175.40/x
  3. Step 3: Cross multiply
    242,655.72x = 363,984.48 × 74,175.40
  4. Step 4: Simplify right side
    242,655.72x = 26,998,692,577.87
  5. Step 5: Solve for x
    x = 26,998,692,577.87/242,655.72
  6. Step 6: Final answer
    x = 111,263.37

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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.