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Finding the Fourth Proportional to 72,608.94, 108,935.28 and 25,855.74

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Solution

The fourth proportional to 72,608.94, 108,935.28 and 25,855.74 is: 38,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,608.94 : 108,935.28 = 25,855.74 : x
  2. Step 2: Convert to fraction form
    72,608.94/108,935.28 = 25,855.74/x
  3. Step 3: Cross multiply
    72,608.94x = 108,935.28 × 25,855.74
  4. Step 4: Simplify right side
    72,608.94x = 2,816,602,276.51
  5. Step 5: Solve for x
    x = 2,816,602,276.51/72,608.94
  6. Step 6: Final answer
    x = 38,791.40

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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.