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Finding the Fourth Proportional to 99,063.75, 136,605.19 and 84,770.88

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Solution

The fourth proportional to 99,063.75, 136,605.19 and 84,770.88 is: 116,895.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,063.75 : 136,605.19 = 84,770.88 : x
  2. Step 2: Convert to fraction form
    99,063.75/136,605.19 = 84,770.88/x
  3. Step 3: Cross multiply
    99,063.75x = 136,605.19 × 84,770.88
  4. Step 4: Simplify right side
    99,063.75x = 11,580,142,168.87
  5. Step 5: Solve for x
    x = 11,580,142,168.87/99,063.75
  6. Step 6: Final answer
    x = 116,895.86

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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.