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Finding the Fourth Proportional to 201,868.30, 302,474.40 and 168,407.20

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Solution

The fourth proportional to 201,868.30, 302,474.40 and 168,407.20 is: 252,337.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,868.30 : 302,474.40 = 168,407.20 : x
  2. Step 2: Convert to fraction form
    201,868.30/302,474.40 = 168,407.20/x
  3. Step 3: Cross multiply
    201,868.30x = 302,474.40 × 168,407.20
  4. Step 4: Simplify right side
    201,868.30x = 50,938,866,775.68
  5. Step 5: Solve for x
    x = 50,938,866,775.68/201,868.30
  6. Step 6: Final answer
    x = 252,337.13

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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.