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Finding the Fourth Proportional to 213,181.96, 294,189.64 and 117,688.64

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Solution

The fourth proportional to 213,181.96, 294,189.64 and 117,688.64 is: 162,409.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,181.96 : 294,189.64 = 117,688.64 : x
  2. Step 2: Convert to fraction form
    213,181.96/294,189.64 = 117,688.64/x
  3. Step 3: Cross multiply
    213,181.96x = 294,189.64 × 117,688.64
  4. Step 4: Simplify right side
    213,181.96x = 34,622,778,633.69
  5. Step 5: Solve for x
    x = 34,622,778,633.69/213,181.96
  6. Step 6: Final answer
    x = 162,409.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.