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Finding the Fourth Proportional to 108,791.10, 163,203.12 and 38,653.74

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Solution

The fourth proportional to 108,791.10, 163,203.12 and 38,653.74 is: 57,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,791.10 : 163,203.12 = 38,653.74 : x
  2. Step 2: Convert to fraction form
    108,791.10/163,203.12 = 38,653.74/x
  3. Step 3: Cross multiply
    108,791.10x = 163,203.12 × 38,653.74
  4. Step 4: Simplify right side
    108,791.10x = 6,308,410,967.67
  5. Step 5: Solve for x
    x = 6,308,410,967.67/108,791.10
  6. Step 6: Final answer
    x = 57,986.46

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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.