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Finding the Fourth Proportional to 178,017.20, 266,939.40 and 99,047.60

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Solution

The fourth proportional to 178,017.20, 266,939.40 and 99,047.60 is: 148,523.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,017.20 : 266,939.40 = 99,047.60 : x
  2. Step 2: Convert to fraction form
    178,017.20/266,939.40 = 99,047.60/x
  3. Step 3: Cross multiply
    178,017.20x = 266,939.40 × 99,047.60
  4. Step 4: Simplify right side
    178,017.20x = 26,439,706,915.44
  5. Step 5: Solve for x
    x = 26,439,706,915.44/178,017.20
  6. Step 6: Final answer
    x = 148,523.33

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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.