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Finding the Fourth Proportional to 197,963.60, 296,983.80 and 85,643.60

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Solution

The fourth proportional to 197,963.60, 296,983.80 and 85,643.60 is: 128,482.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,963.60 : 296,983.80 = 85,643.60 : x
  2. Step 2: Convert to fraction form
    197,963.60/296,983.80 = 85,643.60/x
  3. Step 3: Cross multiply
    197,963.60x = 296,983.80 × 85,643.60
  4. Step 4: Simplify right side
    197,963.60x = 25,434,761,773.68
  5. Step 5: Solve for x
    x = 25,434,761,773.68/197,963.60
  6. Step 6: Final answer
    x = 128,482.01

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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.