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Finding the Fourth Proportional to 70,328.12, 105,507.98 and 23,579.80

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Solution

The fourth proportional to 70,328.12, 105,507.98 and 23,579.80 is: 35,375.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,328.12 : 105,507.98 = 23,579.80 : x
  2. Step 2: Convert to fraction form
    70,328.12/105,507.98 = 23,579.80/x
  3. Step 3: Cross multiply
    70,328.12x = 105,507.98 × 23,579.80
  4. Step 4: Simplify right side
    70,328.12x = 2,487,857,066.80
  5. Step 5: Solve for x
    x = 2,487,857,066.80/70,328.12
  6. Step 6: Final answer
    x = 35,375.00

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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.