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Finding the Fourth Proportional to 104,062.99, 143,487.22 and 76,878.41

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Solution

The fourth proportional to 104,062.99, 143,487.22 and 76,878.41 is: 106,003.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,062.99 : 143,487.22 = 76,878.41 : x
  2. Step 2: Convert to fraction form
    104,062.99/143,487.22 = 76,878.41/x
  3. Step 3: Cross multiply
    104,062.99x = 143,487.22 × 76,878.41
  4. Step 4: Simplify right side
    104,062.99x = 11,031,069,495.44
  5. Step 5: Solve for x
    x = 11,031,069,495.44/104,062.99
  6. Step 6: Final answer
    x = 106,003.77

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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.