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Finding the Fourth Proportional to 55,893.69, 77,132.54 and 30,399.51

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Solution

The fourth proportional to 55,893.69, 77,132.54 and 30,399.51 is: 41,950.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,893.69 : 77,132.54 = 30,399.51 : x
  2. Step 2: Convert to fraction form
    55,893.69/77,132.54 = 30,399.51/x
  3. Step 3: Cross multiply
    55,893.69x = 77,132.54 × 30,399.51
  4. Step 4: Simplify right side
    55,893.69x = 2,344,791,269.06
  5. Step 5: Solve for x
    x = 2,344,791,269.06/55,893.69
  6. Step 6: Final answer
    x = 41,950.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.