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Finding the Fourth Proportional to 49,812.56, 74,718.84 and 28,784.72

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Solution

The fourth proportional to 49,812.56, 74,718.84 and 28,784.72 is: 43,177.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,812.56 : 74,718.84 = 28,784.72 : x
  2. Step 2: Convert to fraction form
    49,812.56/74,718.84 = 28,784.72/x
  3. Step 3: Cross multiply
    49,812.56x = 74,718.84 × 28,784.72
  4. Step 4: Simplify right side
    49,812.56x = 2,150,760,888.12
  5. Step 5: Solve for x
    x = 2,150,760,888.12/49,812.56
  6. Step 6: Final answer
    x = 43,177.08

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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.