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Finding the Fourth Proportional to 39,406.30, 59,099.05 and 19,670.30

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Solution

The fourth proportional to 39,406.30, 59,099.05 and 19,670.30 is: 29,500.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406.30 : 59,099.05 = 19,670.30 : x
  2. Step 2: Convert to fraction form
    39,406.30/59,099.05 = 19,670.30/x
  3. Step 3: Cross multiply
    39,406.30x = 59,099.05 × 19,670.30
  4. Step 4: Simplify right side
    39,406.30x = 1,162,496,043.22
  5. Step 5: Solve for x
    x = 1,162,496,043.22/39,406.30
  6. Step 6: Final answer
    x = 29,500.26

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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.