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Finding the Fourth Proportional to 70,989.15, 106,393.28 and 37,725.15

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Solution

The fourth proportional to 70,989.15, 106,393.28 and 37,725.15 is: 56,539.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,989.15 : 106,393.28 = 37,725.15 : x
  2. Step 2: Convert to fraction form
    70,989.15/106,393.28 = 37,725.15/x
  3. Step 3: Cross multiply
    70,989.15x = 106,393.28 × 37,725.15
  4. Step 4: Simplify right side
    70,989.15x = 4,013,702,258.37
  5. Step 5: Solve for x
    x = 4,013,702,258.37/70,989.15
  6. Step 6: Final answer
    x = 56,539.66

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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.