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Finding the Fourth Proportional to 223,561.14, 308,358.18 and 151,816.56

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Solution

The fourth proportional to 223,561.14, 308,358.18 and 151,816.56 is: 209,400.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,561.14 : 308,358.18 = 151,816.56 : x
  2. Step 2: Convert to fraction form
    223,561.14/308,358.18 = 151,816.56/x
  3. Step 3: Cross multiply
    223,561.14x = 308,358.18 × 151,816.56
  4. Step 4: Simplify right side
    223,561.14x = 46,813,878,135.46
  5. Step 5: Solve for x
    x = 46,813,878,135.46/223,561.14
  6. Step 6: Final answer
    x = 209,400.78

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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.