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Finding the Fourth Proportional to 118,258.68, 163,198.90 and 70,539.96

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Solution

The fourth proportional to 118,258.68, 163,198.90 and 70,539.96 is: 97,346.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,258.68 : 163,198.90 = 70,539.96 : x
  2. Step 2: Convert to fraction form
    118,258.68/163,198.90 = 70,539.96/x
  3. Step 3: Cross multiply
    118,258.68x = 163,198.90 × 70,539.96
  4. Step 4: Simplify right side
    118,258.68x = 11,512,043,878.04
  5. Step 5: Solve for x
    x = 11,512,043,878.04/118,258.68
  6. Step 6: Final answer
    x = 97,346.29

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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.