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Finding the Fourth Proportional to 91,156.64, 136,450.20 and 57,914.24

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Solution

The fourth proportional to 91,156.64, 136,450.20 and 57,914.24 is: 86,690.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,156.64 : 136,450.20 = 57,914.24 : x
  2. Step 2: Convert to fraction form
    91,156.64/136,450.20 = 57,914.24/x
  3. Step 3: Cross multiply
    91,156.64x = 136,450.20 × 57,914.24
  4. Step 4: Simplify right side
    91,156.64x = 7,902,409,630.85
  5. Step 5: Solve for x
    x = 7,902,409,630.85/91,156.64
  6. Step 6: Final answer
    x = 86,690.44

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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.