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Finding the Fourth Proportional to 319,685.47, 441,163.80 and 176,445.47

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Solution

The fourth proportional to 319,685.47, 441,163.80 and 176,445.47 is: 243,493.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,685.47 : 441,163.80 = 176,445.47 : x
  2. Step 2: Convert to fraction form
    319,685.47/441,163.80 = 176,445.47/x
  3. Step 3: Cross multiply
    319,685.47x = 441,163.80 × 176,445.47
  4. Step 4: Simplify right side
    319,685.47x = 77,841,355,140.90
  5. Step 5: Solve for x
    x = 77,841,355,140.90/319,685.47
  6. Step 6: Final answer
    x = 243,493.57

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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.