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Finding the Fourth Proportional to 70,596.94, 105,899.04 and 18,006.88

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Solution

The fourth proportional to 70,596.94, 105,899.04 and 18,006.88 is: 27,011.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,596.94 : 105,899.04 = 18,006.88 : x
  2. Step 2: Convert to fraction form
    70,596.94/105,899.04 = 18,006.88/x
  3. Step 3: Cross multiply
    70,596.94x = 105,899.04 × 18,006.88
  4. Step 4: Simplify right side
    70,596.94x = 1,906,911,305.40
  5. Step 5: Solve for x
    x = 1,906,911,305.40/70,596.94
  6. Step 6: Final answer
    x = 27,011.25

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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.