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Finding the Fourth Proportional to 295,961.76, 444,009.60 and 85,616.64

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Solution

The fourth proportional to 295,961.76, 444,009.60 and 85,616.64 is: 128,444.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,961.76 : 444,009.60 = 85,616.64 : x
  2. Step 2: Convert to fraction form
    295,961.76/444,009.60 = 85,616.64/x
  3. Step 3: Cross multiply
    295,961.76x = 444,009.60 × 85,616.64
  4. Step 4: Simplify right side
    295,961.76x = 38,014,610,079.74
  5. Step 5: Solve for x
    x = 38,014,610,079.74/295,961.76
  6. Step 6: Final answer
    x = 128,444.33

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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.