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Finding the Fourth Proportional to 66,216.60, 99,470.70 and 46,533.60

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Solution

The fourth proportional to 66,216.60, 99,470.70 and 46,533.60 is: 69,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,216.60 : 99,470.70 = 46,533.60 : x
  2. Step 2: Convert to fraction form
    66,216.60/99,470.70 = 46,533.60/x
  3. Step 3: Cross multiply
    66,216.60x = 99,470.70 × 46,533.60
  4. Step 4: Simplify right side
    66,216.60x = 4,628,729,765.52
  5. Step 5: Solve for x
    x = 4,628,729,765.52/66,216.60
  6. Step 6: Final answer
    x = 69,902.86

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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.