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Finding the Fourth Proportional to 705,969.45, 974,245.38 and 383,679.57

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Solution

The fourth proportional to 705,969.45, 974,245.38 and 383,679.57 is: 529,481.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,969.45 : 974,245.38 = 383,679.57 : x
  2. Step 2: Convert to fraction form
    705,969.45/974,245.38 = 383,679.57/x
  3. Step 3: Cross multiply
    705,969.45x = 974,245.38 × 383,679.57
  4. Step 4: Simplify right side
    705,969.45x = 373,798,048,472.89
  5. Step 5: Solve for x
    x = 373,798,048,472.89/705,969.45
  6. Step 6: Final answer
    x = 529,481.90

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1.5x scale

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.