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Finding the Fourth Proportional to 92,626.60, 138,956.64 and 70,712.32

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Solution

The fourth proportional to 92,626.60, 138,956.64 and 70,712.32 is: 106,081.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,626.60 : 138,956.64 = 70,712.32 : x
  2. Step 2: Convert to fraction form
    92,626.60/138,956.64 = 70,712.32/x
  3. Step 3: Cross multiply
    92,626.60x = 138,956.64 × 70,712.32
  4. Step 4: Simplify right side
    92,626.60x = 9,825,946,393.80
  5. Step 5: Solve for x
    x = 9,825,946,393.80/92,626.60
  6. Step 6: Final answer
    x = 106,081.26

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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.