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Finding the Fourth Proportional to 99,223.74, 136,929.84 and 53,902.62

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Solution

The fourth proportional to 99,223.74, 136,929.84 and 53,902.62 is: 74,386.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,223.74 : 136,929.84 = 53,902.62 : x
  2. Step 2: Convert to fraction form
    99,223.74/136,929.84 = 53,902.62/x
  3. Step 3: Cross multiply
    99,223.74x = 136,929.84 × 53,902.62
  4. Step 4: Simplify right side
    99,223.74x = 7,380,877,132.18
  5. Step 5: Solve for x
    x = 7,380,877,132.18/99,223.74
  6. Step 6: Final answer
    x = 74,386.20

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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.