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Finding the Fourth Proportional to 66,173.74, 99,204.80 and 28,705.58

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Solution

The fourth proportional to 66,173.74, 99,204.80 and 28,705.58 is: 43,034.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,173.74 : 99,204.80 = 28,705.58 : x
  2. Step 2: Convert to fraction form
    66,173.74/99,204.80 = 28,705.58/x
  3. Step 3: Cross multiply
    66,173.74x = 99,204.80 × 28,705.58
  4. Step 4: Simplify right side
    66,173.74x = 2,847,731,658.92
  5. Step 5: Solve for x
    x = 2,847,731,658.92/66,173.74
  6. Step 6: Final answer
    x = 43,034.17

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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.