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Finding the Fourth Proportional to 76,644.98, 105,770.08 and 43,110.98

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Solution

The fourth proportional to 76,644.98, 105,770.08 and 43,110.98 is: 59,493.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,644.98 : 105,770.08 = 43,110.98 : x
  2. Step 2: Convert to fraction form
    76,644.98/105,770.08 = 43,110.98/x
  3. Step 3: Cross multiply
    76,644.98x = 105,770.08 × 43,110.98
  4. Step 4: Simplify right side
    76,644.98x = 4,559,852,198.86
  5. Step 5: Solve for x
    x = 4,559,852,198.86/76,644.98
  6. Step 6: Final answer
    x = 59,493.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.