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Finding the Fourth Proportional to 705,999.88, 974,286.20 and 383,710.72

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Solution

The fourth proportional to 705,999.88, 974,286.20 and 383,710.72 is: 529,524.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,999.88 : 974,286.20 = 383,710.72 : x
  2. Step 2: Convert to fraction form
    705,999.88/974,286.20 = 383,710.72/x
  3. Step 3: Cross multiply
    705,999.88x = 974,286.20 × 383,710.72
  4. Step 4: Simplify right side
    705,999.88x = 373,844,059,288.06
  5. Step 5: Solve for x
    x = 373,844,059,288.06/705,999.88
  6. Step 6: Final answer
    x = 529,524.25

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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.