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Finding the Fourth Proportional to 319,690.90, 441,142.01 and 176,441.71

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Solution

The fourth proportional to 319,690.90, 441,142.01 and 176,441.71 is: 243,472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,690.90 : 441,142.01 = 176,441.71 : x
  2. Step 2: Convert to fraction form
    319,690.90/441,142.01 = 176,441.71/x
  3. Step 3: Cross multiply
    319,690.90x = 441,142.01 × 176,441.71
  4. Step 4: Simplify right side
    319,690.90x = 77,835,851,093.46
  5. Step 5: Solve for x
    x = 77,835,851,093.46/319,690.90
  6. Step 6: Final answer
    x = 243,472.21

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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.