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Finding the Fourth Proportional to 70,087.96, 105,069.38 and 25,704.32

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Solution

The fourth proportional to 70,087.96, 105,069.38 and 25,704.32 is: 38,533.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,087.96 : 105,069.38 = 25,704.32 : x
  2. Step 2: Convert to fraction form
    70,087.96/105,069.38 = 25,704.32/x
  3. Step 3: Cross multiply
    70,087.96x = 105,069.38 × 25,704.32
  4. Step 4: Simplify right side
    70,087.96x = 2,700,736,965.72
  5. Step 5: Solve for x
    x = 2,700,736,965.72/70,087.96
  6. Step 6: Final answer
    x = 38,533.54

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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.