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Finding the Fourth Proportional to 383,360.89, 529,041.60 and 211,284.99

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Solution

The fourth proportional to 383,360.89, 529,041.60 and 211,284.99 is: 291,575.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,360.89 : 529,041.60 = 211,284.99 : x
  2. Step 2: Convert to fraction form
    383,360.89/529,041.60 = 211,284.99/x
  3. Step 3: Cross multiply
    383,360.89x = 529,041.60 × 211,284.99
  4. Step 4: Simplify right side
    383,360.89x = 111,778,549,165.58
  5. Step 5: Solve for x
    x = 111,778,549,165.58/383,360.89
  6. Step 6: Final answer
    x = 291,575.25

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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.