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Finding the Fourth Proportional to 66,432.70, 99,650.22 and 19,686.70

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Solution

The fourth proportional to 66,432.70, 99,650.22 and 19,686.70 is: 29,530.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,432.70 : 99,650.22 = 19,686.70 : x
  2. Step 2: Convert to fraction form
    66,432.70/99,650.22 = 19,686.70/x
  3. Step 3: Cross multiply
    66,432.70x = 99,650.22 × 19,686.70
  4. Step 4: Simplify right side
    66,432.70x = 1,961,783,986.07
  5. Step 5: Solve for x
    x = 1,961,783,986.07/66,432.70
  6. Step 6: Final answer
    x = 29,530.40

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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.