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Finding the Fourth Proportional to 705,521.83, 973,621.97 and 383,229.31

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Solution

The fourth proportional to 705,521.83, 973,621.97 and 383,229.31 is: 528,857.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,521.83 : 973,621.97 = 383,229.31 : x
  2. Step 2: Convert to fraction form
    705,521.83/973,621.97 = 383,229.31/x
  3. Step 3: Cross multiply
    705,521.83x = 973,621.97 × 383,229.31
  4. Step 4: Simplify right side
    705,521.83x = 373,120,472,850.85
  5. Step 5: Solve for x
    x = 373,120,472,850.85/705,521.83
  6. Step 6: Final answer
    x = 528,857.45

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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.