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Finding the Fourth Proportional to 70,940.34, 97,894.98 and 39,107.34

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Solution

The fourth proportional to 70,940.34, 97,894.98 and 39,107.34 is: 53,966.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,940.34 : 97,894.98 = 39,107.34 : x
  2. Step 2: Convert to fraction form
    70,940.34/97,894.98 = 39,107.34/x
  3. Step 3: Cross multiply
    70,940.34x = 97,894.98 × 39,107.34
  4. Step 4: Simplify right side
    70,940.34x = 3,828,412,267.15
  5. Step 5: Solve for x
    x = 3,828,412,267.15/70,940.34
  6. Step 6: Final answer
    x = 53,966.65

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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.