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Finding the Fourth Proportional to 66,464.60, 99,551.10 and 57,716.60

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Solution

The fourth proportional to 66,464.60, 99,551.10 and 57,716.60 is: 86,448.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,464.60 : 99,551.10 = 57,716.60 : x
  2. Step 2: Convert to fraction form
    66,464.60/99,551.10 = 57,716.60/x
  3. Step 3: Cross multiply
    66,464.60x = 99,551.10 × 57,716.60
  4. Step 4: Simplify right side
    66,464.60x = 5,745,751,018.26
  5. Step 5: Solve for x
    x = 5,745,751,018.26/66,464.60
  6. Step 6: Final answer
    x = 86,448.29

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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.