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Finding the Fourth Proportional to 321,099.19, 443,116.88 and 177,868.51

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Solution

The fourth proportional to 321,099.19, 443,116.88 and 177,868.51 is: 245,458.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,099.19 : 443,116.88 = 177,868.51 : x
  2. Step 2: Convert to fraction form
    321,099.19/443,116.88 = 177,868.51/x
  3. Step 3: Cross multiply
    321,099.19x = 443,116.88 × 177,868.51
  4. Step 4: Simplify right side
    321,099.19x = 78,816,537,871.32
  5. Step 5: Solve for x
    x = 78,816,537,871.32/321,099.19
  6. Step 6: Final answer
    x = 245,458.54

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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.