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Finding the Fourth Proportional to 248,622.40, 373,079.40 and 90,866.80

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Solution

The fourth proportional to 248,622.40, 373,079.40 and 90,866.80 is: 136,353.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,622.40 : 373,079.40 = 90,866.80 : x
  2. Step 2: Convert to fraction form
    248,622.40/373,079.40 = 90,866.80/x
  3. Step 3: Cross multiply
    248,622.40x = 373,079.40 × 90,866.80
  4. Step 4: Simplify right side
    248,622.40x = 33,900,531,223.92
  5. Step 5: Solve for x
    x = 33,900,531,223.92/248,622.40
  6. Step 6: Final answer
    x = 136,353.49

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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.