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Finding the Fourth Proportional to 336,978.93, 505,473.84 and 112,336.32

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Solution

The fourth proportional to 336,978.93, 505,473.84 and 112,336.32 is: 168,506.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,978.93 : 505,473.84 = 112,336.32 : x
  2. Step 2: Convert to fraction form
    336,978.93/505,473.84 = 112,336.32/x
  3. Step 3: Cross multiply
    336,978.93x = 505,473.84 × 112,336.32
  4. Step 4: Simplify right side
    336,978.93x = 56,783,071,041.87
  5. Step 5: Solve for x
    x = 56,783,071,041.87/336,978.93
  6. Step 6: Final answer
    x = 168,506.30

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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.