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Finding the Fourth Proportional to 81,242.82, 112,109.94 and 44,943.30

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Solution

The fourth proportional to 81,242.82, 112,109.94 and 44,943.30 is: 62,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,242.82 : 112,109.94 = 44,943.30 : x
  2. Step 2: Convert to fraction form
    81,242.82/112,109.94 = 44,943.30/x
  3. Step 3: Cross multiply
    81,242.82x = 112,109.94 × 44,943.30
  4. Step 4: Simplify right side
    81,242.82x = 5,038,590,666.40
  5. Step 5: Solve for x
    x = 5,038,590,666.40/81,242.82
  6. Step 6: Final answer
    x = 62,018.90

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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.