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Finding the Fourth Proportional to 129,076.80, 178,027.41 and 93,384.96

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Solution

The fourth proportional to 129,076.80, 178,027.41 and 93,384.96 is: 128,799.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,076.80 : 178,027.41 = 93,384.96 : x
  2. Step 2: Convert to fraction form
    129,076.80/178,027.41 = 93,384.96/x
  3. Step 3: Cross multiply
    129,076.80x = 178,027.41 × 93,384.96
  4. Step 4: Simplify right side
    129,076.80x = 16,625,082,561.75
  5. Step 5: Solve for x
    x = 16,625,082,561.75/129,076.80
  6. Step 6: Final answer
    x = 128,799.93

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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.