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Finding the Fourth Proportional to 312,203.79, 430,842.60 and 168,963.89

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Solution

The fourth proportional to 312,203.79, 430,842.60 and 168,963.89 is: 233,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,203.79 : 430,842.60 = 168,963.89 : x
  2. Step 2: Convert to fraction form
    312,203.79/430,842.60 = 168,963.89/x
  3. Step 3: Cross multiply
    312,203.79x = 430,842.60 × 168,963.89
  4. Step 4: Simplify right side
    312,203.79x = 72,796,839,519.50
  5. Step 5: Solve for x
    x = 72,796,839,519.50/312,203.79
  6. Step 6: Final answer
    x = 233,170.90

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1.5x scale

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.