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Finding the Fourth Proportional to 605,878.45, 908,814.90 and 156,561.13

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Solution

The fourth proportional to 605,878.45, 908,814.90 and 156,561.13 is: 234,840.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,878.45 : 908,814.90 = 156,561.13 : x
  2. Step 2: Convert to fraction form
    605,878.45/908,814.90 = 156,561.13/x
  3. Step 3: Cross multiply
    605,878.45x = 908,814.90 × 156,561.13
  4. Step 4: Simplify right side
    605,878.45x = 142,285,087,704.84
  5. Step 5: Solve for x
    x = 142,285,087,704.84/605,878.45
  6. Step 6: Final answer
    x = 234,840.98

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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.