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Finding the Fourth Proportional to 129,274.71, 194,093.71 and 66,140.12

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Solution

The fourth proportional to 129,274.71, 194,093.71 and 66,140.12 is: 99,303.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,274.71 : 194,093.71 = 66,140.12 : x
  2. Step 2: Convert to fraction form
    129,274.71/194,093.71 = 66,140.12/x
  3. Step 3: Cross multiply
    129,274.71x = 194,093.71 × 66,140.12
  4. Step 4: Simplify right side
    129,274.71x = 12,837,380,951.63
  5. Step 5: Solve for x
    x = 12,837,380,951.63/129,274.71
  6. Step 6: Final answer
    x = 99,303.11

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1.5x scale

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.