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Finding the Fourth Proportional to 70,625.94, 105,939.08 and 17,318.15

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Solution

The fourth proportional to 70,625.94, 105,939.08 and 17,318.15 is: 25,977.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,625.94 : 105,939.08 = 17,318.15 : x
  2. Step 2: Convert to fraction form
    70,625.94/105,939.08 = 17,318.15/x
  3. Step 3: Cross multiply
    70,625.94x = 105,939.08 × 17,318.15
  4. Step 4: Simplify right side
    70,625.94x = 1,834,668,878.30
  5. Step 5: Solve for x
    x = 1,834,668,878.30/70,625.94
  6. Step 6: Final answer
    x = 25,977.27

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1.5x scale

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.