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Finding the Fourth Proportional to 64,868.80, 97,231.20 and 25,412.80

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Solution

The fourth proportional to 64,868.80, 97,231.20 and 25,412.80 is: 38,090.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,868.80 : 97,231.20 = 25,412.80 : x
  2. Step 2: Convert to fraction form
    64,868.80/97,231.20 = 25,412.80/x
  3. Step 3: Cross multiply
    64,868.80x = 97,231.20 × 25,412.80
  4. Step 4: Simplify right side
    64,868.80x = 2,470,917,039.36
  5. Step 5: Solve for x
    x = 2,470,917,039.36/64,868.80
  6. Step 6: Final answer
    x = 38,090.99

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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.