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Finding the Fourth Proportional to 46,758.60, 69,992.10 and 45,300.60

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Solution

The fourth proportional to 46,758.60, 69,992.10 and 45,300.60 is: 67,809.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,758.60 : 69,992.10 = 45,300.60 : x
  2. Step 2: Convert to fraction form
    46,758.60/69,992.10 = 45,300.60/x
  3. Step 3: Cross multiply
    46,758.60x = 69,992.10 × 45,300.60
  4. Step 4: Simplify right side
    46,758.60x = 3,170,684,125.26
  5. Step 5: Solve for x
    x = 3,170,684,125.26/46,758.60
  6. Step 6: Final answer
    x = 67,809.65

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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.