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Finding the Fourth Proportional to 69,029.01, 103,738.52 and 40,954.31

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Solution

The fourth proportional to 69,029.01, 103,738.52 and 40,954.31 is: 61,547.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,029.01 : 103,738.52 = 40,954.31 : x
  2. Step 2: Convert to fraction form
    69,029.01/103,738.52 = 40,954.31/x
  3. Step 3: Cross multiply
    69,029.01x = 103,738.52 × 40,954.31
  4. Step 4: Simplify right side
    69,029.01x = 4,248,539,479.73
  5. Step 5: Solve for x
    x = 4,248,539,479.73/69,029.01
  6. Step 6: Final answer
    x = 61,547.16

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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.