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Finding the Fourth Proportional to 173,813.60, 260,749.20 and 74,021.60

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Solution

The fourth proportional to 173,813.60, 260,749.20 and 74,021.60 is: 111,044.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,813.60 : 260,749.20 = 74,021.60 : x
  2. Step 2: Convert to fraction form
    173,813.60/260,749.20 = 74,021.60/x
  3. Step 3: Cross multiply
    173,813.60x = 260,749.20 × 74,021.60
  4. Step 4: Simplify right side
    173,813.60x = 19,301,072,982.72
  5. Step 5: Solve for x
    x = 19,301,072,982.72/173,813.60
  6. Step 6: Final answer
    x = 111,044.66

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1.5x scale

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.