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Finding the Fourth Proportional to 72,449.51, 108,681.15 and 22,516.16

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Solution

The fourth proportional to 72,449.51, 108,681.15 and 22,516.16 is: 33,776.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,449.51 : 108,681.15 = 22,516.16 : x
  2. Step 2: Convert to fraction form
    72,449.51/108,681.15 = 22,516.16/x
  3. Step 3: Cross multiply
    72,449.51x = 108,681.15 × 22,516.16
  4. Step 4: Simplify right side
    72,449.51x = 2,447,081,618.98
  5. Step 5: Solve for x
    x = 2,447,081,618.98/72,449.51
  6. Step 6: Final answer
    x = 33,776.37

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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.