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Finding the Fourth Proportional to 73,222.70, 109,708.64 and 39,966.10

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Solution

The fourth proportional to 73,222.70, 109,708.64 and 39,966.10 is: 59,880.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,222.70 : 109,708.64 = 39,966.10 : x
  2. Step 2: Convert to fraction form
    73,222.70/109,708.64 = 39,966.10/x
  3. Step 3: Cross multiply
    73,222.70x = 109,708.64 × 39,966.10
  4. Step 4: Simplify right side
    73,222.70x = 4,384,626,477.10
  5. Step 5: Solve for x
    x = 4,384,626,477.10/73,222.70
  6. Step 6: Final answer
    x = 59,880.70

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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.