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Finding the Fourth Proportional to 223,884.68, 308,724.08 and 172,905.71

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Solution

The fourth proportional to 223,884.68, 308,724.08 and 172,905.71 is: 238,427.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,884.68 : 308,724.08 = 172,905.71 : x
  2. Step 2: Convert to fraction form
    223,884.68/308,724.08 = 172,905.71/x
  3. Step 3: Cross multiply
    223,884.68x = 308,724.08 × 172,905.71
  4. Step 4: Simplify right side
    223,884.68x = 53,380,153,838.35
  5. Step 5: Solve for x
    x = 53,380,153,838.35/223,884.68
  6. Step 6: Final answer
    x = 238,427.01

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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.