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Finding the Fourth Proportional to 219,410.73, 302,786.79 and 118,808.73

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Solution

The fourth proportional to 219,410.73, 302,786.79 and 118,808.73 is: 163,956.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,410.73 : 302,786.79 = 118,808.73 : x
  2. Step 2: Convert to fraction form
    219,410.73/302,786.79 = 118,808.73/x
  3. Step 3: Cross multiply
    219,410.73x = 302,786.79 × 118,808.73
  4. Step 4: Simplify right side
    219,410.73x = 35,973,713,980.68
  5. Step 5: Solve for x
    x = 35,973,713,980.68/219,410.73
  6. Step 6: Final answer
    x = 163,956.04

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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.