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Finding the Fourth Proportional to 108,958.44, 163,395.48 and 42,389.64

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Solution

The fourth proportional to 108,958.44, 163,395.48 and 42,389.64 is: 63,568.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,958.44 : 163,395.48 = 42,389.64 : x
  2. Step 2: Convert to fraction form
    108,958.44/163,395.48 = 42,389.64/x
  3. Step 3: Cross multiply
    108,958.44x = 163,395.48 × 42,389.64
  4. Step 4: Simplify right side
    108,958.44x = 6,926,275,574.83
  5. Step 5: Solve for x
    x = 6,926,275,574.83/108,958.44
  6. Step 6: Final answer
    x = 63,568.05

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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.