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Finding the Fourth Proportional to 251,810.64, 347,497.56 and 138,633.30

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Solution

The fourth proportional to 251,810.64, 347,497.56 and 138,633.30 is: 191,313.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,810.64 : 347,497.56 = 138,633.30 : x
  2. Step 2: Convert to fraction form
    251,810.64/347,497.56 = 138,633.30/x
  3. Step 3: Cross multiply
    251,810.64x = 347,497.56 × 138,633.30
  4. Step 4: Simplify right side
    251,810.64x = 48,174,733,484.75
  5. Step 5: Solve for x
    x = 48,174,733,484.75/251,810.64
  6. Step 6: Final answer
    x = 191,313.34

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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.