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Finding the Fourth Proportional to 223,576.91, 308,535.91 and 128,083.98

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Solution

The fourth proportional to 223,576.91, 308,535.91 and 128,083.98 is: 176,755.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,576.91 : 308,535.91 = 128,083.98 : x
  2. Step 2: Convert to fraction form
    223,576.91/308,535.91 = 128,083.98/x
  3. Step 3: Cross multiply
    223,576.91x = 308,535.91 × 128,083.98
  4. Step 4: Simplify right side
    223,576.91x = 39,518,506,685.30
  5. Step 5: Solve for x
    x = 39,518,506,685.30/223,576.91
  6. Step 6: Final answer
    x = 176,755.76

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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.