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Finding the Fourth Proportional to 121,213.60, 181,796.10 and 58,033.60

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Solution

The fourth proportional to 121,213.60, 181,796.10 and 58,033.60 is: 87,038.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,213.60 : 181,796.10 = 58,033.60 : x
  2. Step 2: Convert to fraction form
    121,213.60/181,796.10 = 58,033.60/x
  3. Step 3: Cross multiply
    121,213.60x = 181,796.10 × 58,033.60
  4. Step 4: Simplify right side
    121,213.60x = 10,550,282,148.96
  5. Step 5: Solve for x
    x = 10,550,282,148.96/121,213.60
  6. Step 6: Final answer
    x = 87,038.77

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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.