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Finding the Fourth Proportional to 70,529.85, 97,331.31 and 38,698.99

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Solution

The fourth proportional to 70,529.85, 97,331.31 and 38,698.99 is: 53,404.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,529.85 : 97,331.31 = 38,698.99 : x
  2. Step 2: Convert to fraction form
    70,529.85/97,331.31 = 38,698.99/x
  3. Step 3: Cross multiply
    70,529.85x = 97,331.31 × 38,698.99
  4. Step 4: Simplify right side
    70,529.85x = 3,766,623,149.05
  5. Step 5: Solve for x
    x = 3,766,623,149.05/70,529.85
  6. Step 6: Final answer
    x = 53,404.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.