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Finding the Fourth Proportional to 64,929.74, 89,603.69 and 36,636.03

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Solution

The fourth proportional to 64,929.74, 89,603.69 and 36,636.03 is: 50,558.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,929.74 : 89,603.69 = 36,636.03 : x
  2. Step 2: Convert to fraction form
    64,929.74/89,603.69 = 36,636.03/x
  3. Step 3: Cross multiply
    64,929.74x = 89,603.69 × 36,636.03
  4. Step 4: Simplify right side
    64,929.74x = 3,282,723,291.77
  5. Step 5: Solve for x
    x = 3,282,723,291.77/64,929.74
  6. Step 6: Final answer
    x = 50,558.09

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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.