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Finding the Fourth Proportional to 69,078.48, 103,482.13 and 35,820.29

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Solution

The fourth proportional to 69,078.48, 103,482.13 and 35,820.29 is: 53,660.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,078.48 : 103,482.13 = 35,820.29 : x
  2. Step 2: Convert to fraction form
    69,078.48/103,482.13 = 35,820.29/x
  3. Step 3: Cross multiply
    69,078.48x = 103,482.13 × 35,820.29
  4. Step 4: Simplify right side
    69,078.48x = 3,706,759,299.46
  5. Step 5: Solve for x
    x = 3,706,759,299.46/69,078.48
  6. Step 6: Final answer
    x = 53,660.12

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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.