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Finding the Fourth Proportional to 66,383.84, 99,541.20 and 19,630.40

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Solution

The fourth proportional to 66,383.84, 99,541.20 and 19,630.40 is: 29,435.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,383.84 : 99,541.20 = 19,630.40 : x
  2. Step 2: Convert to fraction form
    66,383.84/99,541.20 = 19,630.40/x
  3. Step 3: Cross multiply
    66,383.84x = 99,541.20 × 19,630.40
  4. Step 4: Simplify right side
    66,383.84x = 1,954,033,572.48
  5. Step 5: Solve for x
    x = 1,954,033,572.48/66,383.84
  6. Step 6: Final answer
    x = 29,435.38

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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.