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Finding the Fourth Proportional to 109,074.60, 163,563.30 and 49,928.40

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Solution

The fourth proportional to 109,074.60, 163,563.30 and 49,928.40 is: 74,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,074.60 : 163,563.30 = 49,928.40 : x
  2. Step 2: Convert to fraction form
    109,074.60/163,563.30 = 49,928.40/x
  3. Step 3: Cross multiply
    109,074.60x = 163,563.30 × 49,928.40
  4. Step 4: Simplify right side
    109,074.60x = 8,166,453,867.72
  5. Step 5: Solve for x
    x = 8,166,453,867.72/109,074.60
  6. Step 6: Final answer
    x = 74,870.35

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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.