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Finding the Fourth Proportional to 121,362.63, 167,486.10 and 67,648.04

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Solution

The fourth proportional to 121,362.63, 167,486.10 and 67,648.04 is: 93,357.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,362.63 : 167,486.10 = 67,648.04 : x
  2. Step 2: Convert to fraction form
    121,362.63/167,486.10 = 67,648.04/x
  3. Step 3: Cross multiply
    121,362.63x = 167,486.10 × 67,648.04
  4. Step 4: Simplify right side
    121,362.63x = 11,330,105,554.81
  5. Step 5: Solve for x
    x = 11,330,105,554.81/121,362.63
  6. Step 6: Final answer
    x = 93,357.45

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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.