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Finding the Fourth Proportional to 121,480.92, 167,643.84 and 70,503.60

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Solution

The fourth proportional to 121,480.92, 167,643.84 and 70,503.60 is: 97,295.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,480.92 : 167,643.84 = 70,503.60 : x
  2. Step 2: Convert to fraction form
    121,480.92/167,643.84 = 70,503.60/x
  3. Step 3: Cross multiply
    121,480.92x = 167,643.84 × 70,503.60
  4. Step 4: Simplify right side
    121,480.92x = 11,819,494,237.82
  5. Step 5: Solve for x
    x = 11,819,494,237.82/121,480.92
  6. Step 6: Final answer
    x = 97,295.07

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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.