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Finding the Fourth Proportional to 77,212.44, 115,622.64 and 64,699.56

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Solution

The fourth proportional to 77,212.44, 115,622.64 and 64,699.56 is: 96,885.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,212.44 : 115,622.64 = 64,699.56 : x
  2. Step 2: Convert to fraction form
    77,212.44/115,622.64 = 64,699.56/x
  3. Step 3: Cross multiply
    77,212.44x = 115,622.64 × 64,699.56
  4. Step 4: Simplify right side
    77,212.44x = 7,480,733,934.04
  5. Step 5: Solve for x
    x = 7,480,733,934.04/77,212.44
  6. Step 6: Final answer
    x = 96,885.09

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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.