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Finding the Fourth Proportional to 94,986.40, 142,479.60 and 88,765.60

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Solution

The fourth proportional to 94,986.40, 142,479.60 and 88,765.60 is: 133,148.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,986.40 : 142,479.60 = 88,765.60 : x
  2. Step 2: Convert to fraction form
    94,986.40/142,479.60 = 88,765.60/x
  3. Step 3: Cross multiply
    94,986.40x = 142,479.60 × 88,765.60
  4. Step 4: Simplify right side
    94,986.40x = 12,647,287,181.76
  5. Step 5: Solve for x
    x = 12,647,287,181.76/94,986.40
  6. Step 6: Final answer
    x = 133,148.40

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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.