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Finding the Fourth Proportional to 69,515.28, 104,272.80 and 19,595.28

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Solution

The fourth proportional to 69,515.28, 104,272.80 and 19,595.28 is: 29,392.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,515.28 : 104,272.80 = 19,595.28 : x
  2. Step 2: Convert to fraction form
    69,515.28/104,272.80 = 19,595.28/x
  3. Step 3: Cross multiply
    69,515.28x = 104,272.80 × 19,595.28
  4. Step 4: Simplify right side
    69,515.28x = 2,043,254,712.38
  5. Step 5: Solve for x
    x = 2,043,254,712.38/69,515.28
  6. Step 6: Final answer
    x = 29,392.89

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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.