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Finding the Fourth Proportional to 319,294.60, 440,629.62 and 176,059.72

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Solution

The fourth proportional to 319,294.60, 440,629.62 and 176,059.72 is: 242,964.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,294.60 : 440,629.62 = 176,059.72 : x
  2. Step 2: Convert to fraction form
    319,294.60/440,629.62 = 176,059.72/x
  3. Step 3: Cross multiply
    319,294.60x = 440,629.62 × 176,059.72
  4. Step 4: Simplify right side
    319,294.60x = 77,577,127,520.91
  5. Step 5: Solve for x
    x = 77,577,127,520.91/319,294.60
  6. Step 6: Final answer
    x = 242,964.11

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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.