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Finding the Fourth Proportional to 118,139.34, 163,028.68 and 67,157.64

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Solution

The fourth proportional to 118,139.34, 163,028.68 and 67,157.64 is: 92,675.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,139.34 : 163,028.68 = 67,157.64 : x
  2. Step 2: Convert to fraction form
    118,139.34/163,028.68 = 67,157.64/x
  3. Step 3: Cross multiply
    118,139.34x = 163,028.68 × 67,157.64
  4. Step 4: Simplify right side
    118,139.34x = 10,948,621,401.12
  5. Step 5: Solve for x
    x = 10,948,621,401.12/118,139.34
  6. Step 6: Final answer
    x = 92,675.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.