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Finding the Fourth Proportional to 64,686.84, 89,267.67 and 36,392.52

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Solution

The fourth proportional to 64,686.84, 89,267.67 and 36,392.52 is: 50,221.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,686.84 : 89,267.67 = 36,392.52 : x
  2. Step 2: Convert to fraction form
    64,686.84/89,267.67 = 36,392.52/x
  3. Step 3: Cross multiply
    64,686.84x = 89,267.67 × 36,392.52
  4. Step 4: Simplify right side
    64,686.84x = 3,248,675,465.83
  5. Step 5: Solve for x
    x = 3,248,675,465.83/64,686.84
  6. Step 6: Final answer
    x = 50,221.58

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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.