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Finding the Fourth Proportional to 215,696.45, 323,545.50 and 65,936.16

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Solution

The fourth proportional to 215,696.45, 323,545.50 and 65,936.16 is: 98,904.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,696.45 : 323,545.50 = 65,936.16 : x
  2. Step 2: Convert to fraction form
    215,696.45/323,545.50 = 65,936.16/x
  3. Step 3: Cross multiply
    215,696.45x = 323,545.50 × 65,936.16
  4. Step 4: Simplify right side
    215,696.45x = 21,333,347,855.28
  5. Step 5: Solve for x
    x = 21,333,347,855.28/215,696.45
  6. Step 6: Final answer
    x = 98,904.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.