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Finding the Fourth Proportional to 321,146.71, 443,185.93 and 177,915.22

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Solution

The fourth proportional to 321,146.71, 443,185.93 and 177,915.22 is: 245,524.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,146.71 : 443,185.93 = 177,915.22 : x
  2. Step 2: Convert to fraction form
    321,146.71/443,185.93 = 177,915.22/x
  3. Step 3: Cross multiply
    321,146.71x = 443,185.93 × 177,915.22
  4. Step 4: Simplify right side
    321,146.71x = 78,849,521,351.28
  5. Step 5: Solve for x
    x = 78,849,521,351.28/321,146.71
  6. Step 6: Final answer
    x = 245,524.93

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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.