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Finding the Fourth Proportional to 94,096, 128,913.28 and 90,553.60

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Solution

The fourth proportional to 94,096, 128,913.28 and 90,553.60 is: 124,060.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,096 : 128,913.28 = 90,553.60 : x
  2. Step 2: Convert to fraction form
    94,096/128,913.28 = 90,553.60/x
  3. Step 3: Cross multiply
    94,096x = 128,913.28 × 90,553.60
  4. Step 4: Simplify right side
    94,096x = 11,673,561,591.81
  5. Step 5: Solve for x
    x = 11,673,561,591.81/94,096
  6. Step 6: Final answer
    x = 124,060.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.