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Finding the Fourth Proportional to 74,603.72, 102,985.01 and 44,391.87

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Solution

The fourth proportional to 74,603.72, 102,985.01 and 44,391.87 is: 61,279.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,603.72 : 102,985.01 = 44,391.87 : x
  2. Step 2: Convert to fraction form
    74,603.72/102,985.01 = 44,391.87/x
  3. Step 3: Cross multiply
    74,603.72x = 102,985.01 × 44,391.87
  4. Step 4: Simplify right side
    74,603.72x = 4,571,696,953.91
  5. Step 5: Solve for x
    x = 4,571,696,953.91/74,603.72
  6. Step 6: Final answer
    x = 61,279.75

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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.