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Finding the Fourth Proportional to 80,855.76, 111,581.04 and 46,870.80

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Solution

The fourth proportional to 80,855.76, 111,581.04 and 46,870.80 is: 64,681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,855.76 : 111,581.04 = 46,870.80 : x
  2. Step 2: Convert to fraction form
    80,855.76/111,581.04 = 46,870.80/x
  3. Step 3: Cross multiply
    80,855.76x = 111,581.04 × 46,870.80
  4. Step 4: Simplify right side
    80,855.76x = 5,229,892,609.63
  5. Step 5: Solve for x
    x = 5,229,892,609.63/80,855.76
  6. Step 6: Final answer
    x = 64,681.76

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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.