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Finding the Fourth Proportional to 319,808.72, 441,336.70 and 176,569.04

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Solution

The fourth proportional to 319,808.72, 441,336.70 and 176,569.04 is: 243,665.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,808.72 : 441,336.70 = 176,569.04 : x
  2. Step 2: Convert to fraction form
    319,808.72/441,336.70 = 176,569.04/x
  3. Step 3: Cross multiply
    319,808.72x = 441,336.70 × 176,569.04
  4. Step 4: Simplify right side
    319,808.72x = 77,926,397,435.77
  5. Step 5: Solve for x
    x = 77,926,397,435.77/319,808.72
  6. Step 6: Final answer
    x = 243,665.64

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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.