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Finding the Fourth Proportional to 66,396.51, 99,461.52 and 33,015.60

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Solution

The fourth proportional to 66,396.51, 99,461.52 and 33,015.60 is: 49,457.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,396.51 : 99,461.52 = 33,015.60 : x
  2. Step 2: Convert to fraction form
    66,396.51/99,461.52 = 33,015.60/x
  3. Step 3: Cross multiply
    66,396.51x = 99,461.52 × 33,015.60
  4. Step 4: Simplify right side
    66,396.51x = 3,283,781,759.71
  5. Step 5: Solve for x
    x = 3,283,781,759.71/66,396.51
  6. Step 6: Final answer
    x = 49,457.14

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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.