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Finding the Fourth Proportional to 65,998.80, 99,082.68 and 56,698.32

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Solution

The fourth proportional to 65,998.80, 99,082.68 and 56,698.32 is: 85,120.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,998.80 : 99,082.68 = 56,698.32 : x
  2. Step 2: Convert to fraction form
    65,998.80/99,082.68 = 56,698.32/x
  3. Step 3: Cross multiply
    65,998.80x = 99,082.68 × 56,698.32
  4. Step 4: Simplify right side
    65,998.80x = 5,617,821,497.10
  5. Step 5: Solve for x
    x = 5,617,821,497.10/65,998.80
  6. Step 6: Final answer
    x = 85,120.06

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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.