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Finding the Fourth Proportional to 121,213.22, 181,619.35 and 61,967.39

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Solution

The fourth proportional to 121,213.22, 181,619.35 and 61,967.39 is: 92,848.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,213.22 : 181,619.35 = 61,967.39 : x
  2. Step 2: Convert to fraction form
    121,213.22/181,619.35 = 61,967.39/x
  3. Step 3: Cross multiply
    121,213.22x = 181,619.35 × 61,967.39
  4. Step 4: Simplify right side
    121,213.22x = 11,254,475,875.06
  5. Step 5: Solve for x
    x = 11,254,475,875.06/121,213.22
  6. Step 6: Final answer
    x = 92,848.59

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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.