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Finding the Fourth Proportional to 70,029.88, 105,044.77 and 25,660.11

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Solution

The fourth proportional to 70,029.88, 105,044.77 and 25,660.11 is: 38,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,029.88 : 105,044.77 = 25,660.11 : x
  2. Step 2: Convert to fraction form
    70,029.88/105,044.77 = 25,660.11/x
  3. Step 3: Cross multiply
    70,029.88x = 105,044.77 × 25,660.11
  4. Step 4: Simplify right side
    70,029.88x = 2,695,460,043.90
  5. Step 5: Solve for x
    x = 2,695,460,043.90/70,029.88
  6. Step 6: Final answer
    x = 38,490.14

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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.