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Finding the Fourth Proportional to 383,357.01, 529,036.25 and 211,281.11

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Solution

The fourth proportional to 383,357.01, 529,036.25 and 211,281.11 is: 291,569.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,357.01 : 529,036.25 = 211,281.11 : x
  2. Step 2: Convert to fraction form
    383,357.01/529,036.25 = 211,281.11/x
  3. Step 3: Cross multiply
    383,357.01x = 529,036.25 × 211,281.11
  4. Step 4: Simplify right side
    383,357.01x = 111,775,365,073.83
  5. Step 5: Solve for x
    x = 111,775,365,073.83/383,357.01
  6. Step 6: Final answer
    x = 291,569.90

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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.