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Finding the Fourth Proportional to 70,371.72, 105,546.12 and 26,019.36

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Solution

The fourth proportional to 70,371.72, 105,546.12 and 26,019.36 is: 39,024.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,371.72 : 105,546.12 = 26,019.36 : x
  2. Step 2: Convert to fraction form
    70,371.72/105,546.12 = 26,019.36/x
  3. Step 3: Cross multiply
    70,371.72x = 105,546.12 × 26,019.36
  4. Step 4: Simplify right side
    70,371.72x = 2,746,242,492.88
  5. Step 5: Solve for x
    x = 2,746,242,492.88/70,371.72
  6. Step 6: Final answer
    x = 39,024.80

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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.