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Finding the Fourth Proportional to 383,370.40, 529,054.62 and 211,294.50

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Solution

The fourth proportional to 383,370.40, 529,054.62 and 211,294.50 is: 291,588.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,370.40 : 529,054.62 = 211,294.50 : x
  2. Step 2: Convert to fraction form
    383,370.40/529,054.62 = 211,294.50/x
  3. Step 3: Cross multiply
    383,370.40x = 529,054.62 × 211,294.50
  4. Step 4: Simplify right side
    383,370.40x = 111,786,331,405.59
  5. Step 5: Solve for x
    x = 111,786,331,405.59/383,370.40
  6. Step 6: Final answer
    x = 291,588.32

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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.