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Finding the Fourth Proportional to 70,069.59, 96,698.79 and 39,857.67

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Solution

The fourth proportional to 70,069.59, 96,698.79 and 39,857.67 is: 55,005.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,069.59 : 96,698.79 = 39,857.67 : x
  2. Step 2: Convert to fraction form
    70,069.59/96,698.79 = 39,857.67/x
  3. Step 3: Cross multiply
    70,069.59x = 96,698.79 × 39,857.67
  4. Step 4: Simplify right side
    70,069.59x = 3,854,188,461.22
  5. Step 5: Solve for x
    x = 3,854,188,461.22/70,069.59
  6. Step 6: Final answer
    x = 55,005.15

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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.