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Finding the Fourth Proportional to 395,999.90, 593,999.85 and 159,512.30

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Solution

The fourth proportional to 395,999.90, 593,999.85 and 159,512.30 is: 239,268.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,999.90 : 593,999.85 = 159,512.30 : x
  2. Step 2: Convert to fraction form
    395,999.90/593,999.85 = 159,512.30/x
  3. Step 3: Cross multiply
    395,999.90x = 593,999.85 × 159,512.30
  4. Step 4: Simplify right side
    395,999.90x = 94,750,282,273.16
  5. Step 5: Solve for x
    x = 94,750,282,273.16/395,999.90
  6. Step 6: Final answer
    x = 239,268.45

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1.5x scale

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.