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Finding the Fourth Proportional to 319,957.71, 441,503.82 and 176,709.21

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Solution

The fourth proportional to 319,957.71, 441,503.82 and 176,709.21 is: 243,837.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,957.71 : 441,503.82 = 176,709.21 : x
  2. Step 2: Convert to fraction form
    319,957.71/441,503.82 = 176,709.21/x
  3. Step 3: Cross multiply
    319,957.71x = 441,503.82 × 176,709.21
  4. Step 4: Simplify right side
    319,957.71x = 78,017,791,244.18
  5. Step 5: Solve for x
    x = 78,017,791,244.18/319,957.71
  6. Step 6: Final answer
    x = 243,837.82

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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.