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Finding the Fourth Proportional to 70,290.97, 105,425.63 and 22,905.95

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Solution

The fourth proportional to 70,290.97, 105,425.63 and 22,905.95 is: 34,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,290.97 : 105,425.63 = 22,905.95 : x
  2. Step 2: Convert to fraction form
    70,290.97/105,425.63 = 22,905.95/x
  3. Step 3: Cross multiply
    70,290.97x = 105,425.63 × 22,905.95
  4. Step 4: Simplify right side
    70,290.97x = 2,414,874,134.98
  5. Step 5: Solve for x
    x = 2,414,874,134.98/70,290.97
  6. Step 6: Final answer
    x = 34,355.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.