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Finding the Fourth Proportional to 70,367.48, 105,558.14 and 20,448.01

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Solution

The fourth proportional to 70,367.48, 105,558.14 and 20,448.01 is: 30,674.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,367.48 : 105,558.14 = 20,448.01 : x
  2. Step 2: Convert to fraction form
    70,367.48/105,558.14 = 20,448.01/x
  3. Step 3: Cross multiply
    70,367.48x = 105,558.14 × 20,448.01
  4. Step 4: Simplify right side
    70,367.48x = 2,158,453,536.17
  5. Step 5: Solve for x
    x = 2,158,453,536.17/70,367.48
  6. Step 6: Final answer
    x = 30,674.02

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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.