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Finding the Fourth Proportional to 64,921.26, 97,428.03 and 25,478.38

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Solution

The fourth proportional to 64,921.26, 97,428.03 and 25,478.38 is: 38,235.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,921.26 : 97,428.03 = 25,478.38 : x
  2. Step 2: Convert to fraction form
    64,921.26/97,428.03 = 25,478.38/x
  3. Step 3: Cross multiply
    64,921.26x = 97,428.03 × 25,478.38
  4. Step 4: Simplify right side
    64,921.26x = 2,482,308,370.99
  5. Step 5: Solve for x
    x = 2,482,308,370.99/64,921.26
  6. Step 6: Final answer
    x = 38,235.68

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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.