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Finding the Fourth Proportional to 98,383.40, 147,356.40 and 76,124.60

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Solution

The fourth proportional to 98,383.40, 147,356.40 and 76,124.60 is: 114,017.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,383.40 : 147,356.40 = 76,124.60 : x
  2. Step 2: Convert to fraction form
    98,383.40/147,356.40 = 76,124.60/x
  3. Step 3: Cross multiply
    98,383.40x = 147,356.40 × 76,124.60
  4. Step 4: Simplify right side
    98,383.40x = 11,217,447,007.44
  5. Step 5: Solve for x
    x = 11,217,447,007.44/98,383.40
  6. Step 6: Final answer
    x = 114,017.68

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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.