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Finding the Fourth Proportional to 108,873.14, 150,241.08 and 61,128.50

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Solution

The fourth proportional to 108,873.14, 150,241.08 and 61,128.50 is: 84,355.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,873.14 : 150,241.08 = 61,128.50 : x
  2. Step 2: Convert to fraction form
    108,873.14/150,241.08 = 61,128.50/x
  3. Step 3: Cross multiply
    108,873.14x = 150,241.08 × 61,128.50
  4. Step 4: Simplify right side
    108,873.14x = 9,184,011,858.78
  5. Step 5: Solve for x
    x = 9,184,011,858.78/108,873.14
  6. Step 6: Final answer
    x = 84,355.17

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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.