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Finding the Fourth Proportional to 80,870.40, 111,601.59 and 46,899.03

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Solution

The fourth proportional to 80,870.40, 111,601.59 and 46,899.03 is: 64,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,870.40 : 111,601.59 = 46,899.03 : x
  2. Step 2: Convert to fraction form
    80,870.40/111,601.59 = 46,899.03/x
  3. Step 3: Cross multiply
    80,870.40x = 111,601.59 × 46,899.03
  4. Step 4: Simplify right side
    80,870.40x = 5,234,006,055.69
  5. Step 5: Solve for x
    x = 5,234,006,055.69/80,870.40
  6. Step 6: Final answer
    x = 64,720.91

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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.