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Finding the Fourth Proportional to 705,622.32, 973,760.40 and 383,329.80

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Solution

The fourth proportional to 705,622.32, 973,760.40 and 383,329.80 is: 528,995.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,622.32 : 973,760.40 = 383,329.80 : x
  2. Step 2: Convert to fraction form
    705,622.32/973,760.40 = 383,329.80/x
  3. Step 3: Cross multiply
    705,622.32x = 973,760.40 × 383,329.80
  4. Step 4: Simplify right side
    705,622.32x = 373,271,379,379.92
  5. Step 5: Solve for x
    x = 373,271,379,379.92/705,622.32
  6. Step 6: Final answer
    x = 528,995.99

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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.