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Finding the Fourth Proportional to 70,894.90, 97,839.32 and 39,063.79

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Solution

The fourth proportional to 70,894.90, 97,839.32 and 39,063.79 is: 53,910.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,894.90 : 97,839.32 = 39,063.79 : x
  2. Step 2: Convert to fraction form
    70,894.90/97,839.32 = 39,063.79/x
  3. Step 3: Cross multiply
    70,894.90x = 97,839.32 × 39,063.79
  4. Step 4: Simplify right side
    70,894.90x = 3,821,974,650.22
  5. Step 5: Solve for x
    x = 3,821,974,650.22/70,894.90
  6. Step 6: Final answer
    x = 53,910.43

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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.