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Finding the Fourth Proportional to 265,740.48, 398,776.80 and 107,968.93

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Solution

The fourth proportional to 265,740.48, 398,776.80 and 107,968.93 is: 162,020.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,740.48 : 398,776.80 = 107,968.93 : x
  2. Step 2: Convert to fraction form
    265,740.48/398,776.80 = 107,968.93/x
  3. Step 3: Cross multiply
    265,740.48x = 398,776.80 × 107,968.93
  4. Step 4: Simplify right side
    265,740.48x = 43,055,505,144.90
  5. Step 5: Solve for x
    x = 43,055,505,144.90/265,740.48
  6. Step 6: Final answer
    x = 162,020.88

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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.