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Finding the Fourth Proportional to 387,041.52, 580,627.98 and 120,796.14

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Solution

The fourth proportional to 387,041.52, 580,627.98 and 120,796.14 is: 181,214.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,041.52 : 580,627.98 = 120,796.14 : x
  2. Step 2: Convert to fraction form
    387,041.52/580,627.98 = 120,796.14/x
  3. Step 3: Cross multiply
    387,041.52x = 580,627.98 × 120,796.14
  4. Step 4: Simplify right side
    387,041.52x = 70,137,618,760.00
  5. Step 5: Solve for x
    x = 70,137,618,760.00/387,041.52
  6. Step 6: Final answer
    x = 181,214.72

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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.