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Finding the Fourth Proportional to 484,672.02, 727,017.76 and 129,685.48

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Solution

The fourth proportional to 484,672.02, 727,017.76 and 129,685.48 is: 194,530.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,672.02 : 727,017.76 = 129,685.48 : x
  2. Step 2: Convert to fraction form
    484,672.02/727,017.76 = 129,685.48/x
  3. Step 3: Cross multiply
    484,672.02x = 727,017.76 × 129,685.48
  4. Step 4: Simplify right side
    484,672.02x = 94,283,647,174.12
  5. Step 5: Solve for x
    x = 94,283,647,174.12/484,672.02
  6. Step 6: Final answer
    x = 194,530.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.