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Finding the Fourth Proportional to 70,509.33, 105,773.90 and 20,593.08

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Solution

The fourth proportional to 70,509.33, 105,773.90 and 20,593.08 is: 30,892.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,509.33 : 105,773.90 = 20,593.08 : x
  2. Step 2: Convert to fraction form
    70,509.33/105,773.90 = 20,593.08/x
  3. Step 3: Cross multiply
    70,509.33x = 105,773.90 × 20,593.08
  4. Step 4: Simplify right side
    70,509.33x = 2,178,210,281.65
  5. Step 5: Solve for x
    x = 2,178,210,281.65/70,509.33
  6. Step 6: Final answer
    x = 30,892.51

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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.