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Finding the Fourth Proportional to 212,483.97, 293,229.63 and 115,688.48

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Solution

The fourth proportional to 212,483.97, 293,229.63 and 115,688.48 is: 159,651.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,483.97 : 293,229.63 = 115,688.48 : x
  2. Step 2: Convert to fraction form
    212,483.97/293,229.63 = 115,688.48/x
  3. Step 3: Cross multiply
    212,483.97x = 293,229.63 × 115,688.48
  4. Step 4: Simplify right side
    212,483.97x = 33,923,288,719.51
  5. Step 5: Solve for x
    x = 33,923,288,719.51/212,483.97
  6. Step 6: Final answer
    x = 159,651.05

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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.