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Finding the Fourth Proportional to 121,039.59, 167,054.91 and 70,043.54

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Solution

The fourth proportional to 121,039.59, 167,054.91 and 70,043.54 is: 96,671.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,039.59 : 167,054.91 = 70,043.54 : x
  2. Step 2: Convert to fraction form
    121,039.59/167,054.91 = 70,043.54/x
  3. Step 3: Cross multiply
    121,039.59x = 167,054.91 × 70,043.54
  4. Step 4: Simplify right side
    121,039.59x = 11,701,116,172.84
  5. Step 5: Solve for x
    x = 11,701,116,172.84/121,039.59
  6. Step 6: Final answer
    x = 96,671.81

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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.