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Finding the Fourth Proportional to 118,157.72, 177,184.56 and 43,258.40

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Solution

The fourth proportional to 118,157.72, 177,184.56 and 43,258.40 is: 64,868.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,157.72 : 177,184.56 = 43,258.40 : x
  2. Step 2: Convert to fraction form
    118,157.72/177,184.56 = 43,258.40/x
  3. Step 3: Cross multiply
    118,157.72x = 177,184.56 × 43,258.40
  4. Step 4: Simplify right side
    118,157.72x = 7,664,720,570.30
  5. Step 5: Solve for x
    x = 7,664,720,570.30/118,157.72
  6. Step 6: Final answer
    x = 64,868.56

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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.