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Finding the Fourth Proportional to 61,448.78, 84,811.47 and 35,957.90

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Solution

The fourth proportional to 61,448.78, 84,811.47 and 35,957.90 is: 49,629.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,448.78 : 84,811.47 = 35,957.90 : x
  2. Step 2: Convert to fraction form
    61,448.78/84,811.47 = 35,957.90/x
  3. Step 3: Cross multiply
    61,448.78x = 84,811.47 × 35,957.90
  4. Step 4: Simplify right side
    61,448.78x = 3,049,642,357.11
  5. Step 5: Solve for x
    x = 3,049,642,357.11/61,448.78
  6. Step 6: Final answer
    x = 49,629.01

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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.