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Finding the Fourth Proportional to 121,604.62, 167,816.76 and 70,621.60

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Solution

The fourth proportional to 121,604.62, 167,816.76 and 70,621.60 is: 97,459.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,604.62 : 167,816.76 = 70,621.60 : x
  2. Step 2: Convert to fraction form
    121,604.62/167,816.76 = 70,621.60/x
  3. Step 3: Cross multiply
    121,604.62x = 167,816.76 × 70,621.60
  4. Step 4: Simplify right side
    121,604.62x = 11,851,488,098.02
  5. Step 5: Solve for x
    x = 11,851,488,098.02/121,604.62
  6. Step 6: Final answer
    x = 97,459.19

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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.