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Finding the Fourth Proportional to 357,626.45, 536,440.08 and 91,387.19

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Solution

The fourth proportional to 357,626.45, 536,440.08 and 91,387.19 is: 137,080.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,626.45 : 536,440.08 = 91,387.19 : x
  2. Step 2: Convert to fraction form
    357,626.45/536,440.08 = 91,387.19/x
  3. Step 3: Cross multiply
    357,626.45x = 536,440.08 × 91,387.19
  4. Step 4: Simplify right side
    357,626.45x = 49,023,751,514.58
  5. Step 5: Solve for x
    x = 49,023,751,514.58/357,626.45
  6. Step 6: Final answer
    x = 137,080.89

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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.