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Finding the Fourth Proportional to 66,256.58, 99,394.72 and 21,888.02

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Solution

The fourth proportional to 66,256.58, 99,394.72 and 21,888.02 is: 32,835.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,256.58 : 99,394.72 = 21,888.02 : x
  2. Step 2: Convert to fraction form
    66,256.58/99,394.72 = 21,888.02/x
  3. Step 3: Cross multiply
    66,256.58x = 99,394.72 × 21,888.02
  4. Step 4: Simplify right side
    66,256.58x = 2,175,553,619.25
  5. Step 5: Solve for x
    x = 2,175,553,619.25/66,256.58
  6. Step 6: Final answer
    x = 32,835.28

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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.