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Finding the Fourth Proportional to 66,600.84, 99,886.52 and 19,205.42

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Solution

The fourth proportional to 66,600.84, 99,886.52 and 19,205.42 is: 28,803.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,600.84 : 99,886.52 = 19,205.42 : x
  2. Step 2: Convert to fraction form
    66,600.84/99,886.52 = 19,205.42/x
  3. Step 3: Cross multiply
    66,600.84x = 99,886.52 × 19,205.42
  4. Step 4: Simplify right side
    66,600.84x = 1,918,361,973.48
  5. Step 5: Solve for x
    x = 1,918,361,973.48/66,600.84
  6. Step 6: Final answer
    x = 28,803.87

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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.