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Finding the Fourth Proportional to 46,019.20, 69,028.80 and 44,415.40

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Solution

The fourth proportional to 46,019.20, 69,028.80 and 44,415.40 is: 66,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,019.20 : 69,028.80 = 44,415.40 : x
  2. Step 2: Convert to fraction form
    46,019.20/69,028.80 = 44,415.40/x
  3. Step 3: Cross multiply
    46,019.20x = 69,028.80 × 44,415.40
  4. Step 4: Simplify right side
    46,019.20x = 3,065,941,763.52
  5. Step 5: Solve for x
    x = 3,065,941,763.52/46,019.20
  6. Step 6: Final answer
    x = 66,623.10

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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.