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Finding the Fourth Proportional to 622,779.93, 859,499.78 and 381,222.14

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Solution

The fourth proportional to 622,779.93, 859,499.78 and 381,222.14 is: 526,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,779.93 : 859,499.78 = 381,222.14 : x
  2. Step 2: Convert to fraction form
    622,779.93/859,499.78 = 381,222.14/x
  3. Step 3: Cross multiply
    622,779.93x = 859,499.78 × 381,222.14
  4. Step 4: Simplify right side
    622,779.93x = 327,660,339,257.52
  5. Step 5: Solve for x
    x = 327,660,339,257.52/622,779.93
  6. Step 6: Final answer
    x = 526,125.40

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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.