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Finding the Fourth Proportional to 378,108.99, 521,770.71 and 234,866.16

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Solution

The fourth proportional to 378,108.99, 521,770.71 and 234,866.16 is: 324,103.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,108.99 : 521,770.71 = 234,866.16 : x
  2. Step 2: Convert to fraction form
    378,108.99/521,770.71 = 234,866.16/x
  3. Step 3: Cross multiply
    378,108.99x = 521,770.71 × 234,866.16
  4. Step 4: Simplify right side
    378,108.99x = 122,546,283,058.17
  5. Step 5: Solve for x
    x = 122,546,283,058.17/378,108.99
  6. Step 6: Final answer
    x = 324,103.07

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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.