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Finding the Fourth Proportional to 218,936.51, 302,132.39 and 118,334.51

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Solution

The fourth proportional to 218,936.51, 302,132.39 and 118,334.51 is: 163,301.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,936.51 : 302,132.39 = 118,334.51 : x
  2. Step 2: Convert to fraction form
    218,936.51/302,132.39 = 118,334.51/x
  3. Step 3: Cross multiply
    218,936.51x = 302,132.39 × 118,334.51
  4. Step 4: Simplify right side
    218,936.51x = 35,752,688,325.78
  5. Step 5: Solve for x
    x = 35,752,688,325.78/218,936.51
  6. Step 6: Final answer
    x = 163,301.63

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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.