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Finding the Fourth Proportional to 48,643.86, 72,482.21 and 43,338.09

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Solution

The fourth proportional to 48,643.86, 72,482.21 and 43,338.09 is: 64,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,643.86 : 72,482.21 = 43,338.09 : x
  2. Step 2: Convert to fraction form
    48,643.86/72,482.21 = 43,338.09/x
  3. Step 3: Cross multiply
    48,643.86x = 72,482.21 × 43,338.09
  4. Step 4: Simplify right side
    48,643.86x = 3,141,240,540.38
  5. Step 5: Solve for x
    x = 3,141,240,540.38/48,643.86
  6. Step 6: Final answer
    x = 64,576.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.