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Finding the Fourth Proportional to 99,480.35, 149,120.72 and 46,209.72

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Solution

The fourth proportional to 99,480.35, 149,120.72 and 46,209.72 is: 69,268.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,480.35 : 149,120.72 = 46,209.72 : x
  2. Step 2: Convert to fraction form
    99,480.35/149,120.72 = 46,209.72/x
  3. Step 3: Cross multiply
    99,480.35x = 149,120.72 × 46,209.72
  4. Step 4: Simplify right side
    99,480.35x = 6,890,826,486.35
  5. Step 5: Solve for x
    x = 6,890,826,486.35/99,480.35
  6. Step 6: Final answer
    x = 69,268.22

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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.