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Finding the Fourth Proportional to 104,729.70, 157,094.55 and 76,845.45

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Solution

The fourth proportional to 104,729.70, 157,094.55 and 76,845.45 is: 115,268.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,729.70 : 157,094.55 = 76,845.45 : x
  2. Step 2: Convert to fraction form
    104,729.70/157,094.55 = 76,845.45/x
  3. Step 3: Cross multiply
    104,729.70x = 157,094.55 × 76,845.45
  4. Step 4: Simplify right side
    104,729.70x = 12,072,001,387.30
  5. Step 5: Solve for x
    x = 12,072,001,387.30/104,729.70
  6. Step 6: Final answer
    x = 115,268.18

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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.