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Finding the Fourth Proportional to 89,768.99, 123,881.18 and 49,483.43

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Solution

The fourth proportional to 89,768.99, 123,881.18 and 49,483.43 is: 68,287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,768.99 : 123,881.18 = 49,483.43 : x
  2. Step 2: Convert to fraction form
    89,768.99/123,881.18 = 49,483.43/x
  3. Step 3: Cross multiply
    89,768.99x = 123,881.18 × 49,483.43
  4. Step 4: Simplify right side
    89,768.99x = 6,130,064,832.02
  5. Step 5: Solve for x
    x = 6,130,064,832.02/89,768.99
  6. Step 6: Final answer
    x = 68,287.11

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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.