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Finding the Fourth Proportional to 235,411.74, 353,064.36 and 66,928.32

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Solution

The fourth proportional to 235,411.74, 353,064.36 and 66,928.32 is: 100,377.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,411.74 : 353,064.36 = 66,928.32 : x
  2. Step 2: Convert to fraction form
    235,411.74/353,064.36 = 66,928.32/x
  3. Step 3: Cross multiply
    235,411.74x = 353,064.36 × 66,928.32
  4. Step 4: Simplify right side
    235,411.74x = 23,630,004,466.68
  5. Step 5: Solve for x
    x = 23,630,004,466.68/235,411.74
  6. Step 6: Final answer
    x = 100,377.34

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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.