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Finding the Fourth Proportional to 86,391.60, 119,226.60 and 48,153.72

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Solution

The fourth proportional to 86,391.60, 119,226.60 and 48,153.72 is: 66,455.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,391.60 : 119,226.60 = 48,153.72 : x
  2. Step 2: Convert to fraction form
    86,391.60/119,226.60 = 48,153.72/x
  3. Step 3: Cross multiply
    86,391.60x = 119,226.60 × 48,153.72
  4. Step 4: Simplify right side
    86,391.60x = 5,741,204,312.95
  5. Step 5: Solve for x
    x = 5,741,204,312.95/86,391.60
  6. Step 6: Final answer
    x = 66,455.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.