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Finding the Fourth Proportional to 93,205.96, 128,640.90 and 54,963.18

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Solution

The fourth proportional to 93,205.96, 128,640.90 and 54,963.18 is: 75,859.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,205.96 : 128,640.90 = 54,963.18 : x
  2. Step 2: Convert to fraction form
    93,205.96/128,640.90 = 54,963.18/x
  3. Step 3: Cross multiply
    93,205.96x = 128,640.90 × 54,963.18
  4. Step 4: Simplify right side
    93,205.96x = 7,070,512,942.06
  5. Step 5: Solve for x
    x = 7,070,512,942.06/93,205.96
  6. Step 6: Final answer
    x = 75,859.02

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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.