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Finding the Fourth Proportional to 393,669.70, 590,504.55 and 157,048.90

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Solution

The fourth proportional to 393,669.70, 590,504.55 and 157,048.90 is: 235,573.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,669.70 : 590,504.55 = 157,048.90 : x
  2. Step 2: Convert to fraction form
    393,669.70/590,504.55 = 157,048.90/x
  3. Step 3: Cross multiply
    393,669.70x = 590,504.55 × 157,048.90
  4. Step 4: Simplify right side
    393,669.70x = 92,738,090,022.50
  5. Step 5: Solve for x
    x = 92,738,090,022.50/393,669.70
  6. Step 6: Final answer
    x = 235,573.35

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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.