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Finding the Fourth Proportional to 67,707.93, 101,578.29 and 20,322.93

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Solution

The fourth proportional to 67,707.93, 101,578.29 and 20,322.93 is: 30,489.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,707.93 : 101,578.29 = 20,322.93 : x
  2. Step 2: Convert to fraction form
    67,707.93/101,578.29 = 20,322.93/x
  3. Step 3: Cross multiply
    67,707.93x = 101,578.29 × 20,322.93
  4. Step 4: Simplify right side
    67,707.93x = 2,064,368,477.19
  5. Step 5: Solve for x
    x = 2,064,368,477.19/67,707.93
  6. Step 6: Final answer
    x = 30,489.32

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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.