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Finding the Fourth Proportional to 61,480.84, 84,664.90 and 53,410.81

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Solution

The fourth proportional to 61,480.84, 84,664.90 and 53,410.81 is: 73,551.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,480.84 : 84,664.90 = 53,410.81 : x
  2. Step 2: Convert to fraction form
    61,480.84/84,664.90 = 53,410.81/x
  3. Step 3: Cross multiply
    61,480.84x = 84,664.90 × 53,410.81
  4. Step 4: Simplify right side
    61,480.84x = 4,522,020,620.51
  5. Step 5: Solve for x
    x = 4,522,020,620.51/61,480.84
  6. Step 6: Final answer
    x = 73,551.71

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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.