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Finding the Fourth Proportional to 121,608.19, 182,260 and 65,309.95

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Solution

The fourth proportional to 121,608.19, 182,260 and 65,309.95 is: 97,883.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,608.19 : 182,260 = 65,309.95 : x
  2. Step 2: Convert to fraction form
    121,608.19/182,260 = 65,309.95/x
  3. Step 3: Cross multiply
    121,608.19x = 182,260 × 65,309.95
  4. Step 4: Simplify right side
    121,608.19x = 11,903,391,487
  5. Step 5: Solve for x
    x = 11,903,391,487/121,608.19
  6. Step 6: Final answer
    x = 97,883.14

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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.