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Finding the Fourth Proportional to 223,490.04, 308,390.40 and 127,991.04

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Solution

The fourth proportional to 223,490.04, 308,390.40 and 127,991.04 is: 176,612.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,490.04 : 308,390.40 = 127,991.04 : x
  2. Step 2: Convert to fraction form
    223,490.04/308,390.40 = 127,991.04/x
  3. Step 3: Cross multiply
    223,490.04x = 308,390.40 × 127,991.04
  4. Step 4: Simplify right side
    223,490.04x = 39,471,208,022.02
  5. Step 5: Solve for x
    x = 39,471,208,022.02/223,490.04
  6. Step 6: Final answer
    x = 176,612.83

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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.