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Finding the Fourth Proportional to 173,308.60, 260,078.10 and 98,428.60

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Solution

The fourth proportional to 173,308.60, 260,078.10 and 98,428.60 is: 147,708.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,308.60 : 260,078.10 = 98,428.60 : x
  2. Step 2: Convert to fraction form
    173,308.60/260,078.10 = 98,428.60/x
  3. Step 3: Cross multiply
    173,308.60x = 260,078.10 × 98,428.60
  4. Step 4: Simplify right side
    173,308.60x = 25,599,123,273.66
  5. Step 5: Solve for x
    x = 25,599,123,273.66/173,308.60
  6. Step 6: Final answer
    x = 147,708.33

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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.