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Finding the Fourth Proportional to 70,690.98, 97,551.09 and 38,859.66

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Solution

The fourth proportional to 70,690.98, 97,551.09 and 38,859.66 is: 53,624.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,690.98 : 97,551.09 = 38,859.66 : x
  2. Step 2: Convert to fraction form
    70,690.98/97,551.09 = 38,859.66/x
  3. Step 3: Cross multiply
    70,690.98x = 97,551.09 × 38,859.66
  4. Step 4: Simplify right side
    70,690.98x = 3,790,802,190.03
  5. Step 5: Solve for x
    x = 3,790,802,190.03/70,690.98
  6. Step 6: Final answer
    x = 53,624.98

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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.