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Finding the Fourth Proportional to 70,859.60, 106,289.04 and 26,474.88

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Solution

The fourth proportional to 70,859.60, 106,289.04 and 26,474.88 is: 39,712.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,859.60 : 106,289.04 = 26,474.88 : x
  2. Step 2: Convert to fraction form
    70,859.60/106,289.04 = 26,474.88/x
  3. Step 3: Cross multiply
    70,859.60x = 106,289.04 × 26,474.88
  4. Step 4: Simplify right side
    70,859.60x = 2,813,989,579.32
  5. Step 5: Solve for x
    x = 2,813,989,579.32/70,859.60
  6. Step 6: Final answer
    x = 39,712.19

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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.