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Finding the Fourth Proportional to 388,205.87, 535,616.48 and 233,117.15

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Solution

The fourth proportional to 388,205.87, 535,616.48 and 233,117.15 is: 321,637.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,205.87 : 535,616.48 = 233,117.15 : x
  2. Step 2: Convert to fraction form
    388,205.87/535,616.48 = 233,117.15/x
  3. Step 3: Cross multiply
    388,205.87x = 535,616.48 × 233,117.15
  4. Step 4: Simplify right side
    388,205.87x = 124,861,385,215.34
  5. Step 5: Solve for x
    x = 124,861,385,215.34/388,205.87
  6. Step 6: Final answer
    x = 321,637.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.