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Finding the Fourth Proportional to 103,326.94, 154,994.21 and 28,452.87

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Solution

The fourth proportional to 103,326.94, 154,994.21 and 28,452.87 is: 42,680.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,326.94 : 154,994.21 = 28,452.87 : x
  2. Step 2: Convert to fraction form
    103,326.94/154,994.21 = 28,452.87/x
  3. Step 3: Cross multiply
    103,326.94x = 154,994.21 × 28,452.87
  4. Step 4: Simplify right side
    103,326.94x = 4,410,030,072.32
  5. Step 5: Solve for x
    x = 4,410,030,072.32/103,326.94
  6. Step 6: Final answer
    x = 42,680.35

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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.