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Finding the Fourth Proportional to 223,556.68, 308,510.30 and 121,583.12

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Solution

The fourth proportional to 223,556.68, 308,510.30 and 121,583.12 is: 167,785.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,556.68 : 308,510.30 = 121,583.12 : x
  2. Step 2: Convert to fraction form
    223,556.68/308,510.30 = 121,583.12/x
  3. Step 3: Cross multiply
    223,556.68x = 308,510.30 × 121,583.12
  4. Step 4: Simplify right side
    223,556.68x = 37,509,644,826.14
  5. Step 5: Solve for x
    x = 37,509,644,826.14/223,556.68
  6. Step 6: Final answer
    x = 167,785.84

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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.