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Finding the Fourth Proportional to 258,757.92, 388,136.76 and 116,436.84

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Solution

The fourth proportional to 258,757.92, 388,136.76 and 116,436.84 is: 174,655.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,757.92 : 388,136.76 = 116,436.84 : x
  2. Step 2: Convert to fraction form
    258,757.92/388,136.76 = 116,436.84/x
  3. Step 3: Cross multiply
    258,757.92x = 388,136.76 × 116,436.84
  4. Step 4: Simplify right side
    258,757.92x = 45,193,417,822.24
  5. Step 5: Solve for x
    x = 45,193,417,822.24/258,757.92
  6. Step 6: Final answer
    x = 174,655.21

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1.5x scale

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.