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Finding the Fourth Proportional to 66,506.88, 99,776.76 and 19,759.68

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Solution

The fourth proportional to 66,506.88, 99,776.76 and 19,759.68 is: 29,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,506.88 : 99,776.76 = 19,759.68 : x
  2. Step 2: Convert to fraction form
    66,506.88/99,776.76 = 19,759.68/x
  3. Step 3: Cross multiply
    66,506.88x = 99,776.76 × 19,759.68
  4. Step 4: Simplify right side
    66,506.88x = 1,971,556,849.04
  5. Step 5: Solve for x
    x = 1,971,556,849.04/66,506.88
  6. Step 6: Final answer
    x = 29,644.40

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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.