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Finding the Fourth Proportional to 49,908.74, 74,928.71 and 45,782.60

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Solution

The fourth proportional to 49,908.74, 74,928.71 and 45,782.60 is: 68,734.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,908.74 : 74,928.71 = 45,782.60 : x
  2. Step 2: Convert to fraction form
    49,908.74/74,928.71 = 45,782.60/x
  3. Step 3: Cross multiply
    49,908.74x = 74,928.71 × 45,782.60
  4. Step 4: Simplify right side
    49,908.74x = 3,430,430,898.26
  5. Step 5: Solve for x
    x = 3,430,430,898.26/49,908.74
  6. Step 6: Final answer
    x = 68,734.08

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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.