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Finding the Fourth Proportional to 119,803.68, 165,302.76 and 68,812.56

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Solution

The fourth proportional to 119,803.68, 165,302.76 and 68,812.56 is: 94,946.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,803.68 : 165,302.76 = 68,812.56 : x
  2. Step 2: Convert to fraction form
    119,803.68/165,302.76 = 68,812.56/x
  3. Step 3: Cross multiply
    119,803.68x = 165,302.76 × 68,812.56
  4. Step 4: Simplify right side
    119,803.68x = 11,374,906,090.67
  5. Step 5: Solve for x
    x = 11,374,906,090.67/119,803.68
  6. Step 6: Final answer
    x = 94,946.22

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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.