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Finding the Fourth Proportional to 85,181.70, 127,787.76 and 29,018.70

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Solution

The fourth proportional to 85,181.70, 127,787.76 and 29,018.70 is: 43,533.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,181.70 : 127,787.76 = 29,018.70 : x
  2. Step 2: Convert to fraction form
    85,181.70/127,787.76 = 29,018.70/x
  3. Step 3: Cross multiply
    85,181.70x = 127,787.76 × 29,018.70
  4. Step 4: Simplify right side
    85,181.70x = 3,708,234,671.11
  5. Step 5: Solve for x
    x = 3,708,234,671.11/85,181.70
  6. Step 6: Final answer
    x = 43,533.23

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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.