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Finding the Fourth Proportional to 492,315.54, 738,479.19 and 137,307.96

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Solution

The fourth proportional to 492,315.54, 738,479.19 and 137,307.96 is: 205,963.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,315.54 : 738,479.19 = 137,307.96 : x
  2. Step 2: Convert to fraction form
    492,315.54/738,479.19 = 137,307.96/x
  3. Step 3: Cross multiply
    492,315.54x = 738,479.19 × 137,307.96
  4. Step 4: Simplify right side
    492,315.54x = 101,399,066,702.42
  5. Step 5: Solve for x
    x = 101,399,066,702.42/492,315.54
  6. Step 6: Final answer
    x = 205,963.57

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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.