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Finding the Fourth Proportional to 705,977.88, 974,255.64 and 383,687.94

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Solution

The fourth proportional to 705,977.88, 974,255.64 and 383,687.94 is: 529,492.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,977.88 : 974,255.64 = 383,687.94 : x
  2. Step 2: Convert to fraction form
    705,977.88/974,255.64 = 383,687.94/x
  3. Step 3: Cross multiply
    705,977.88x = 974,255.64 × 383,687.94
  4. Step 4: Simplify right side
    705,977.88x = 373,810,139,544.98
  5. Step 5: Solve for x
    x = 373,810,139,544.98/705,977.88
  6. Step 6: Final answer
    x = 529,492.71

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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.