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Finding the Fourth Proportional to 66,193.89, 99,235 and 28,725.72

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Solution

The fourth proportional to 66,193.89, 99,235 and 28,725.72 is: 43,064.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,193.89 : 99,235 = 28,725.72 : x
  2. Step 2: Convert to fraction form
    66,193.89/99,235 = 28,725.72/x
  3. Step 3: Cross multiply
    66,193.89x = 99,235 × 28,725.72
  4. Step 4: Simplify right side
    66,193.89x = 2,850,596,824.20
  5. Step 5: Solve for x
    x = 2,850,596,824.20/66,193.89
  6. Step 6: Final answer
    x = 43,064.35

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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.