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Finding the Fourth Proportional to 70,493.70, 105,740.55 and 37,200.90

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Solution

The fourth proportional to 70,493.70, 105,740.55 and 37,200.90 is: 55,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,493.70 : 105,740.55 = 37,200.90 : x
  2. Step 2: Convert to fraction form
    70,493.70/105,740.55 = 37,200.90/x
  3. Step 3: Cross multiply
    70,493.70x = 105,740.55 × 37,200.90
  4. Step 4: Simplify right side
    70,493.70x = 3,933,643,626.50
  5. Step 5: Solve for x
    x = 3,933,643,626.50/70,493.70
  6. Step 6: Final answer
    x = 55,801.35

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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.