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Finding the Fourth Proportional to 64,596.52, 89,127.30 and 39,436.84

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Solution

The fourth proportional to 64,596.52, 89,127.30 and 39,436.84 is: 54,413.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,596.52 : 89,127.30 = 39,436.84 : x
  2. Step 2: Convert to fraction form
    64,596.52/89,127.30 = 39,436.84/x
  3. Step 3: Cross multiply
    64,596.52x = 89,127.30 × 39,436.84
  4. Step 4: Simplify right side
    64,596.52x = 3,514,899,069.73
  5. Step 5: Solve for x
    x = 3,514,899,069.73/64,596.52
  6. Step 6: Final answer
    x = 54,413.13

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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.