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Finding the Fourth Proportional to 72,906.10, 109,359.15 and 26,152.90

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Solution

The fourth proportional to 72,906.10, 109,359.15 and 26,152.90 is: 39,229.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,906.10 : 109,359.15 = 26,152.90 : x
  2. Step 2: Convert to fraction form
    72,906.10/109,359.15 = 26,152.90/x
  3. Step 3: Cross multiply
    72,906.10x = 109,359.15 × 26,152.90
  4. Step 4: Simplify right side
    72,906.10x = 2,860,058,914.04
  5. Step 5: Solve for x
    x = 2,860,058,914.04/72,906.10
  6. Step 6: Final answer
    x = 39,229.35

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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.