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Finding the Fourth Proportional to 354,761.96, 531,826.47 and 130,069.94

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Solution

The fourth proportional to 354,761.96, 531,826.47 and 130,069.94 is: 194,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,761.96 : 531,826.47 = 130,069.94 : x
  2. Step 2: Convert to fraction form
    354,761.96/531,826.47 = 130,069.94/x
  3. Step 3: Cross multiply
    354,761.96x = 531,826.47 × 130,069.94
  4. Step 4: Simplify right side
    354,761.96x = 69,174,634,384.18
  5. Step 5: Solve for x
    x = 69,174,634,384.18/354,761.96
  6. Step 6: Final answer
    x = 194,988.87

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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.