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Finding the Fourth Proportional to 64,419.78, 88,902.99 and 36,123.24

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Solution

The fourth proportional to 64,419.78, 88,902.99 and 36,123.24 is: 49,852.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,419.78 : 88,902.99 = 36,123.24 : x
  2. Step 2: Convert to fraction form
    64,419.78/88,902.99 = 36,123.24/x
  3. Step 3: Cross multiply
    64,419.78x = 88,902.99 × 36,123.24
  4. Step 4: Simplify right side
    64,419.78x = 3,211,464,044.49
  5. Step 5: Solve for x
    x = 3,211,464,044.49/64,419.78
  6. Step 6: Final answer
    x = 49,852.14

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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.