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Finding the Fourth Proportional to 200,440.98, 300,686.19 and 65,501.85

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Solution

The fourth proportional to 200,440.98, 300,686.19 and 65,501.85 is: 98,260.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,440.98 : 300,686.19 = 65,501.85 : x
  2. Step 2: Convert to fraction form
    200,440.98/300,686.19 = 65,501.85/x
  3. Step 3: Cross multiply
    200,440.98x = 300,686.19 × 65,501.85
  4. Step 4: Simplify right side
    200,440.98x = 19,695,501,714.45
  5. Step 5: Solve for x
    x = 19,695,501,714.45/200,440.98
  6. Step 6: Final answer
    x = 98,260.85

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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.