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Finding the Fourth Proportional to 284,127.69, 392,105.37 and 161,616.90

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Solution

The fourth proportional to 284,127.69, 392,105.37 and 161,616.90 is: 223,036.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,127.69 : 392,105.37 = 161,616.90 : x
  2. Step 2: Convert to fraction form
    284,127.69/392,105.37 = 161,616.90/x
  3. Step 3: Cross multiply
    284,127.69x = 392,105.37 × 161,616.90
  4. Step 4: Simplify right side
    284,127.69x = 63,370,854,372.75
  5. Step 5: Solve for x
    x = 63,370,854,372.75/284,127.69
  6. Step 6: Final answer
    x = 223,036.53

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1.5x scale

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.