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Finding the Fourth Proportional to 141,153.76, 194,797.20 and 77,496.40

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Solution

The fourth proportional to 141,153.76, 194,797.20 and 77,496.40 is: 106,947.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,153.76 : 194,797.20 = 77,496.40 : x
  2. Step 2: Convert to fraction form
    141,153.76/194,797.20 = 77,496.40/x
  3. Step 3: Cross multiply
    141,153.76x = 194,797.20 × 77,496.40
  4. Step 4: Simplify right side
    141,153.76x = 15,096,081,730.08
  5. Step 5: Solve for x
    x = 15,096,081,730.08/141,153.76
  6. Step 6: Final answer
    x = 106,947.78

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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.