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Finding the Fourth Proportional to 52,586.40, 78,879.60 and 32,887.20

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Solution

The fourth proportional to 52,586.40, 78,879.60 and 32,887.20 is: 49,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,586.40 : 78,879.60 = 32,887.20 : x
  2. Step 2: Convert to fraction form
    52,586.40/78,879.60 = 32,887.20/x
  3. Step 3: Cross multiply
    52,586.40x = 78,879.60 × 32,887.20
  4. Step 4: Simplify right side
    52,586.40x = 2,594,129,181.12
  5. Step 5: Solve for x
    x = 2,594,129,181.12/52,586.40
  6. Step 6: Final answer
    x = 49,330.80

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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.