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Finding the Fourth Proportional to 99,239, 136,949.82 and 54,527

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Solution

The fourth proportional to 99,239, 136,949.82 and 54,527 is: 75,247.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,239 : 136,949.82 = 54,527 : x
  2. Step 2: Convert to fraction form
    99,239/136,949.82 = 54,527/x
  3. Step 3: Cross multiply
    99,239x = 136,949.82 × 54,527
  4. Step 4: Simplify right side
    99,239x = 7,467,462,835.14
  5. Step 5: Solve for x
    x = 7,467,462,835.14/99,239
  6. Step 6: Final answer
    x = 75,247.26

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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.