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Finding the Fourth Proportional to 387,351.01, 534,456.80 and 234,385.35

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Solution

The fourth proportional to 387,351.01, 534,456.80 and 234,385.35 is: 323,398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,351.01 : 534,456.80 = 234,385.35 : x
  2. Step 2: Convert to fraction form
    387,351.01/534,456.80 = 234,385.35/x
  3. Step 3: Cross multiply
    387,351.01x = 534,456.80 × 234,385.35
  4. Step 4: Simplify right side
    387,351.01x = 125,268,844,127.88
  5. Step 5: Solve for x
    x = 125,268,844,127.88/387,351.01
  6. Step 6: Final answer
    x = 323,398.78

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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.