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Finding the Fourth Proportional to 229,686.60, 316,967.79 and 127,710.96

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Solution

The fourth proportional to 229,686.60, 316,967.79 and 127,710.96 is: 176,241.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,686.60 : 316,967.79 = 127,710.96 : x
  2. Step 2: Convert to fraction form
    229,686.60/316,967.79 = 127,710.96/x
  3. Step 3: Cross multiply
    229,686.60x = 316,967.79 × 127,710.96
  4. Step 4: Simplify right side
    229,686.60x = 40,480,260,749.98
  5. Step 5: Solve for x
    x = 40,480,260,749.98/229,686.60
  6. Step 6: Final answer
    x = 176,241.28

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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.