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Finding the Fourth Proportional to 64,752.75, 89,352.30 and 47,766.18

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Solution

The fourth proportional to 64,752.75, 89,352.30 and 47,766.18 is: 65,912.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,752.75 : 89,352.30 = 47,766.18 : x
  2. Step 2: Convert to fraction form
    64,752.75/89,352.30 = 47,766.18/x
  3. Step 3: Cross multiply
    64,752.75x = 89,352.30 × 47,766.18
  4. Step 4: Simplify right side
    64,752.75x = 4,268,018,045.21
  5. Step 5: Solve for x
    x = 4,268,018,045.21/64,752.75
  6. Step 6: Final answer
    x = 65,912.54

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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.