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Finding the Fourth Proportional to 70,074.94, 96,705.67 and 39,859.48

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Solution

The fourth proportional to 70,074.94, 96,705.67 and 39,859.48 is: 55,007.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,074.94 : 96,705.67 = 39,859.48 : x
  2. Step 2: Convert to fraction form
    70,074.94/96,705.67 = 39,859.48/x
  3. Step 3: Cross multiply
    70,074.94x = 96,705.67 × 39,859.48
  4. Step 4: Simplify right side
    70,074.94x = 3,854,637,539.10
  5. Step 5: Solve for x
    x = 3,854,637,539.10/70,074.94
  6. Step 6: Final answer
    x = 55,007.37

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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.