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Finding the Fourth Proportional to 357,664.48, 536,494.64 and 91,424.64

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Solution

The fourth proportional to 357,664.48, 536,494.64 and 91,424.64 is: 137,136.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,664.48 : 536,494.64 = 91,424.64 : x
  2. Step 2: Convert to fraction form
    357,664.48/536,494.64 = 91,424.64/x
  3. Step 3: Cross multiply
    357,664.48x = 536,494.64 × 91,424.64
  4. Step 4: Simplify right side
    357,664.48x = 49,048,829,323.93
  5. Step 5: Solve for x
    x = 49,048,829,323.93/357,664.48
  6. Step 6: Final answer
    x = 137,136.43

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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.