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Finding the Fourth Proportional to 89,849.70, 134,774.55 and 76,025.70

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Solution

The fourth proportional to 89,849.70, 134,774.55 and 76,025.70 is: 114,038.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,849.70 : 134,774.55 = 76,025.70 : x
  2. Step 2: Convert to fraction form
    89,849.70/134,774.55 = 76,025.70/x
  3. Step 3: Cross multiply
    89,849.70x = 134,774.55 × 76,025.70
  4. Step 4: Simplify right side
    89,849.70x = 10,246,329,505.94
  5. Step 5: Solve for x
    x = 10,246,329,505.94/89,849.70
  6. Step 6: Final answer
    x = 114,038.55

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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.