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Finding the Fourth Proportional to 223,807.73, 308,968.83 and 172,705.64

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Solution

The fourth proportional to 223,807.73, 308,968.83 and 172,705.64 is: 238,421.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,807.73 : 308,968.83 = 172,705.64 : x
  2. Step 2: Convert to fraction form
    223,807.73/308,968.83 = 172,705.64/x
  3. Step 3: Cross multiply
    223,807.73x = 308,968.83 × 172,705.64
  4. Step 4: Simplify right side
    223,807.73x = 53,360,657,980.36
  5. Step 5: Solve for x
    x = 53,360,657,980.36/223,807.73
  6. Step 6: Final answer
    x = 238,421.88

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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.