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Finding the Fourth Proportional to 405,231.66, 607,656.65 and 236,800.67

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Solution

The fourth proportional to 405,231.66, 607,656.65 and 236,800.67 is: 355,089.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,231.66 : 607,656.65 = 236,800.67 : x
  2. Step 2: Convert to fraction form
    405,231.66/607,656.65 = 236,800.67/x
  3. Step 3: Cross multiply
    405,231.66x = 607,656.65 × 236,800.67
  4. Step 4: Simplify right side
    405,231.66x = 143,893,497,627.67
  5. Step 5: Solve for x
    x = 143,893,497,627.67/405,231.66
  6. Step 6: Final answer
    x = 355,089.48

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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.