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Finding the Fourth Proportional to 99,241.85, 136,945.64 and 58,399.47

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Solution

The fourth proportional to 99,241.85, 136,945.64 and 58,399.47 is: 80,586.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,241.85 : 136,945.64 = 58,399.47 : x
  2. Step 2: Convert to fraction form
    99,241.85/136,945.64 = 58,399.47/x
  3. Step 3: Cross multiply
    99,241.85x = 136,945.64 × 58,399.47
  4. Step 4: Simplify right side
    99,241.85x = 7,997,552,502.81
  5. Step 5: Solve for x
    x = 7,997,552,502.81/99,241.85
  6. Step 6: Final answer
    x = 80,586.50

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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.