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Finding the Fourth Proportional to 173,872.10, 260,905.35 and 74,015.30

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Solution

The fourth proportional to 173,872.10, 260,905.35 and 74,015.30 is: 111,064.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,872.10 : 260,905.35 = 74,015.30 : x
  2. Step 2: Convert to fraction form
    173,872.10/260,905.35 = 74,015.30/x
  3. Step 3: Cross multiply
    173,872.10x = 260,905.35 × 74,015.30
  4. Step 4: Simplify right side
    173,872.10x = 19,310,987,751.86
  5. Step 5: Solve for x
    x = 19,310,987,751.86/173,872.10
  6. Step 6: Final answer
    x = 111,064.33

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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.