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Finding the Fourth Proportional to 67,322.80, 100,870.80 and 53,228.80

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Solution

The fourth proportional to 67,322.80, 100,870.80 and 53,228.80 is: 79,753.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,322.80 : 100,870.80 = 53,228.80 : x
  2. Step 2: Convert to fraction form
    67,322.80/100,870.80 = 53,228.80/x
  3. Step 3: Cross multiply
    67,322.80x = 100,870.80 × 53,228.80
  4. Step 4: Simplify right side
    67,322.80x = 5,369,231,639.04
  5. Step 5: Solve for x
    x = 5,369,231,639.04/67,322.80
  6. Step 6: Final answer
    x = 79,753.54

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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.