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Finding the Fourth Proportional to 66,235.80, 99,344.10 and 19,483.80

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Solution

The fourth proportional to 66,235.80, 99,344.10 and 19,483.80 is: 29,222.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,235.80 : 99,344.10 = 19,483.80 : x
  2. Step 2: Convert to fraction form
    66,235.80/99,344.10 = 19,483.80/x
  3. Step 3: Cross multiply
    66,235.80x = 99,344.10 × 19,483.80
  4. Step 4: Simplify right side
    66,235.80x = 1,935,600,575.58
  5. Step 5: Solve for x
    x = 1,935,600,575.58/66,235.80
  6. Step 6: Final answer
    x = 29,222.88

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1.5x scale

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.