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Finding the Fourth Proportional to 242,878.53, 364,342.11 and 74,396.91

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Solution

The fourth proportional to 242,878.53, 364,342.11 and 74,396.91 is: 111,602.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,878.53 : 364,342.11 = 74,396.91 : x
  2. Step 2: Convert to fraction form
    242,878.53/364,342.11 = 74,396.91/x
  3. Step 3: Cross multiply
    242,878.53x = 364,342.11 × 74,396.91
  4. Step 4: Simplify right side
    242,878.53x = 27,105,927,166.88
  5. Step 5: Solve for x
    x = 27,105,927,166.88/242,878.53
  6. Step 6: Final answer
    x = 111,602.81

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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.