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Finding the Fourth Proportional to 89,897.70, 124,059.78 and 49,612.98

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Solution

The fourth proportional to 89,897.70, 124,059.78 and 49,612.98 is: 68,466.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,897.70 : 124,059.78 = 49,612.98 : x
  2. Step 2: Convert to fraction form
    89,897.70/124,059.78 = 49,612.98/x
  3. Step 3: Cross multiply
    89,897.70x = 124,059.78 × 49,612.98
  4. Step 4: Simplify right side
    89,897.70x = 6,154,975,383.94
  5. Step 5: Solve for x
    x = 6,154,975,383.94/89,897.70
  6. Step 6: Final answer
    x = 68,466.44

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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.