Home / 82,018.17-123,027.26-19,688.67

Finding the Fourth Proportional to 82,018.17, 123,027.26 and 19,688.67

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Solution

The fourth proportional to 82,018.17, 123,027.26 and 19,688.67 is: 29,533.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,018.17 : 123,027.26 = 19,688.67 : x
  2. Step 2: Convert to fraction form
    82,018.17/123,027.26 = 19,688.67/x
  3. Step 3: Cross multiply
    82,018.17x = 123,027.26 × 19,688.67
  4. Step 4: Simplify right side
    82,018.17x = 2,422,243,024.70
  5. Step 5: Solve for x
    x = 2,422,243,024.70/82,018.17
  6. Step 6: Final answer
    x = 29,533.01

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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.