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Finding the Fourth Proportional to 65,356.24, 98,025.12 and 20,986.84

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Solution

The fourth proportional to 65,356.24, 98,025.12 and 20,986.84 is: 31,477.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,356.24 : 98,025.12 = 20,986.84 : x
  2. Step 2: Convert to fraction form
    65,356.24/98,025.12 = 20,986.84/x
  3. Step 3: Cross multiply
    65,356.24x = 98,025.12 × 20,986.84
  4. Step 4: Simplify right side
    65,356.24x = 2,057,237,509.42
  5. Step 5: Solve for x
    x = 2,057,237,509.42/65,356.24
  6. Step 6: Final answer
    x = 31,477.29

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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.