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Finding the Fourth Proportional to 85,505.58, 117,997.41 and 47,779.83

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Solution

The fourth proportional to 85,505.58, 117,997.41 and 47,779.83 is: 65,936.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,505.58 : 117,997.41 = 47,779.83 : x
  2. Step 2: Convert to fraction form
    85,505.58/117,997.41 = 47,779.83/x
  3. Step 3: Cross multiply
    85,505.58x = 117,997.41 × 47,779.83
  4. Step 4: Simplify right side
    85,505.58x = 5,637,896,190.24
  5. Step 5: Solve for x
    x = 5,637,896,190.24/85,505.58
  6. Step 6: Final answer
    x = 65,936.00

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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.