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Finding the Fourth Proportional to 109,967.64, 151,709.94 and 74,168.88

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Solution

The fourth proportional to 109,967.64, 151,709.94 and 74,168.88 is: 102,322.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,967.64 : 151,709.94 = 74,168.88 : x
  2. Step 2: Convert to fraction form
    109,967.64/151,709.94 = 74,168.88/x
  3. Step 3: Cross multiply
    109,967.64x = 151,709.94 × 74,168.88
  4. Step 4: Simplify right side
    109,967.64x = 11,252,156,334.67
  5. Step 5: Solve for x
    x = 11,252,156,334.67/109,967.64
  6. Step 6: Final answer
    x = 102,322.43

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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.