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Finding the Fourth Proportional to 99,207.48, 136,848.78 and 65,222.04

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Solution

The fourth proportional to 99,207.48, 136,848.78 and 65,222.04 is: 89,968.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,207.48 : 136,848.78 = 65,222.04 : x
  2. Step 2: Convert to fraction form
    99,207.48/136,848.78 = 65,222.04/x
  3. Step 3: Cross multiply
    99,207.48x = 136,848.78 × 65,222.04
  4. Step 4: Simplify right side
    99,207.48x = 8,925,556,603.11
  5. Step 5: Solve for x
    x = 8,925,556,603.11/99,207.48
  6. Step 6: Final answer
    x = 89,968.59

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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.