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Finding the Fourth Proportional to 69,645.40, 104,509.59 and 25,275.61

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Solution

The fourth proportional to 69,645.40, 104,509.59 and 25,275.61 is: 37,928.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,645.40 : 104,509.59 = 25,275.61 : x
  2. Step 2: Convert to fraction form
    69,645.40/104,509.59 = 25,275.61/x
  3. Step 3: Cross multiply
    69,645.40x = 104,509.59 × 25,275.61
  4. Step 4: Simplify right side
    69,645.40x = 2,641,543,638.10
  5. Step 5: Solve for x
    x = 2,641,543,638.10/69,645.40
  6. Step 6: Final answer
    x = 37,928.47

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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.