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Finding the Fourth Proportional to 35,879.60, 53,815.20 and 9,586.40

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Solution

The fourth proportional to 35,879.60, 53,815.20 and 9,586.40 is: 14,378.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,879.60 : 53,815.20 = 9,586.40 : x
  2. Step 2: Convert to fraction form
    35,879.60/53,815.20 = 9,586.40/x
  3. Step 3: Cross multiply
    35,879.60x = 53,815.20 × 9,586.40
  4. Step 4: Simplify right side
    35,879.60x = 515,894,033.28
  5. Step 5: Solve for x
    x = 515,894,033.28/35,879.60
  6. Step 6: Final answer
    x = 14,378.48

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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.