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Finding the Fourth Proportional to 405,318.86, 607,137.13 and 236,326.64

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Solution

The fourth proportional to 405,318.86, 607,137.13 and 236,326.64 is: 353,999.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,318.86 : 607,137.13 = 236,326.64 : x
  2. Step 2: Convert to fraction form
    405,318.86/607,137.13 = 236,326.64/x
  3. Step 3: Cross multiply
    405,318.86x = 607,137.13 × 236,326.64
  4. Step 4: Simplify right side
    405,318.86x = 143,482,677,952.14
  5. Step 5: Solve for x
    x = 143,482,677,952.14/405,318.86
  6. Step 6: Final answer
    x = 353,999.51

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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.