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Finding the Fourth Proportional to 335,415.28, 503,123.28 and 86,097.28

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Solution

The fourth proportional to 335,415.28, 503,123.28 and 86,097.28 is: 129,146.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,415.28 : 503,123.28 = 86,097.28 : x
  2. Step 2: Convert to fraction form
    335,415.28/503,123.28 = 86,097.28/x
  3. Step 3: Cross multiply
    335,415.28x = 503,123.28 × 86,097.28
  4. Step 4: Simplify right side
    335,415.28x = 43,317,545,912.68
  5. Step 5: Solve for x
    x = 43,317,545,912.68/335,415.28
  6. Step 6: Final answer
    x = 129,146.01

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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.