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Finding the Fourth Proportional to 38,998.50, 58,503.84 and 12,697.05

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Solution

The fourth proportional to 38,998.50, 58,503.84 and 12,697.05 is: 19,047.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,998.50 : 58,503.84 = 12,697.05 : x
  2. Step 2: Convert to fraction form
    38,998.50/58,503.84 = 12,697.05/x
  3. Step 3: Cross multiply
    38,998.50x = 58,503.84 × 12,697.05
  4. Step 4: Simplify right side
    38,998.50x = 742,826,181.67
  5. Step 5: Solve for x
    x = 742,826,181.67/38,998.50
  6. Step 6: Final answer
    x = 19,047.56

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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.