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Finding the Fourth Proportional to 357,921.65, 536,870.17 and 91,684.47

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Solution

The fourth proportional to 357,921.65, 536,870.17 and 91,684.47 is: 137,523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,921.65 : 536,870.17 = 91,684.47 : x
  2. Step 2: Convert to fraction form
    357,921.65/536,870.17 = 91,684.47/x
  3. Step 3: Cross multiply
    357,921.65x = 536,870.17 × 91,684.47
  4. Step 4: Simplify right side
    357,921.65x = 49,222,656,995.26
  5. Step 5: Solve for x
    x = 49,222,656,995.26/357,921.65
  6. Step 6: Final answer
    x = 137,523.55

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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.