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Finding the Fourth Proportional to 129,156.96, 193,398.48 and 99,504.48

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Solution

The fourth proportional to 129,156.96, 193,398.48 and 99,504.48 is: 148,997.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,156.96 : 193,398.48 = 99,504.48 : x
  2. Step 2: Convert to fraction form
    129,156.96/193,398.48 = 99,504.48/x
  3. Step 3: Cross multiply
    129,156.96x = 193,398.48 × 99,504.48
  4. Step 4: Simplify right side
    129,156.96x = 19,244,015,185.19
  5. Step 5: Solve for x
    x = 19,244,015,185.19/129,156.96
  6. Step 6: Final answer
    x = 148,997.12

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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.