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Finding the Fourth Proportional to 81,240.90, 112,111.59 and 44,943.99

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Solution

The fourth proportional to 81,240.90, 112,111.59 and 44,943.99 is: 62,022.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,240.90 : 112,111.59 = 44,943.99 : x
  2. Step 2: Convert to fraction form
    81,240.90/112,111.59 = 44,943.99/x
  3. Step 3: Cross multiply
    81,240.90x = 112,111.59 × 44,943.99
  4. Step 4: Simplify right side
    81,240.90x = 5,038,742,179.84
  5. Step 5: Solve for x
    x = 5,038,742,179.84/81,240.90
  6. Step 6: Final answer
    x = 62,022.23

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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.