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Finding the Fourth Proportional to 68,866.26, 95,008.32 and 39,779.16

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Solution

The fourth proportional to 68,866.26, 95,008.32 and 39,779.16 is: 54,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,866.26 : 95,008.32 = 39,779.16 : x
  2. Step 2: Convert to fraction form
    68,866.26/95,008.32 = 39,779.16/x
  3. Step 3: Cross multiply
    68,866.26x = 95,008.32 × 39,779.16
  4. Step 4: Simplify right side
    68,866.26x = 3,779,351,162.61
  5. Step 5: Solve for x
    x = 3,779,351,162.61/68,866.26
  6. Step 6: Final answer
    x = 54,879.58

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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.