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Finding the Fourth Proportional to 357,923.10, 536,872.32 and 91,685.91

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Solution

The fourth proportional to 357,923.10, 536,872.32 and 91,685.91 is: 137,525.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,923.10 : 536,872.32 = 91,685.91 : x
  2. Step 2: Convert to fraction form
    357,923.10/536,872.32 = 91,685.91/x
  3. Step 3: Cross multiply
    357,923.10x = 536,872.32 × 91,685.91
  4. Step 4: Simplify right side
    357,923.10x = 49,223,627,213.01
  5. Step 5: Solve for x
    x = 49,223,627,213.01/357,923.10
  6. Step 6: Final answer
    x = 137,525.71

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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.