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Finding the Fourth Proportional to 251,622.88, 347,240.40 and 138,452.64

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Solution

The fourth proportional to 251,622.88, 347,240.40 and 138,452.64 is: 191,065.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,622.88 : 347,240.40 = 138,452.64 : x
  2. Step 2: Convert to fraction form
    251,622.88/347,240.40 = 138,452.64/x
  3. Step 3: Cross multiply
    251,622.88x = 347,240.40 × 138,452.64
  4. Step 4: Simplify right side
    251,622.88x = 48,076,350,094.66
  5. Step 5: Solve for x
    x = 48,076,350,094.66/251,622.88
  6. Step 6: Final answer
    x = 191,065.10

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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.