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Finding the Fourth Proportional to 351,268.65, 526,904.19 and 85,028.74

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Solution

The fourth proportional to 351,268.65, 526,904.19 and 85,028.74 is: 127,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,268.65 : 526,904.19 = 85,028.74 : x
  2. Step 2: Convert to fraction form
    351,268.65/526,904.19 = 85,028.74/x
  3. Step 3: Cross multiply
    351,268.65x = 526,904.19 × 85,028.74
  4. Step 4: Simplify right side
    351,268.65x = 44,801,998,059.16
  5. Step 5: Solve for x
    x = 44,801,998,059.16/351,268.65
  6. Step 6: Final answer
    x = 127,543.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.