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Finding the Fourth Proportional to 298,425.07, 411,868.28 and 191,223.49

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Solution

The fourth proportional to 298,425.07, 411,868.28 and 191,223.49 is: 263,915.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,425.07 : 411,868.28 = 191,223.49 : x
  2. Step 2: Convert to fraction form
    298,425.07/411,868.28 = 191,223.49/x
  3. Step 3: Cross multiply
    298,425.07x = 411,868.28 × 191,223.49
  4. Step 4: Simplify right side
    298,425.07x = 78,758,889,921.90
  5. Step 5: Solve for x
    x = 78,758,889,921.90/298,425.07
  6. Step 6: Final answer
    x = 263,915.13

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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.