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Finding the Fourth Proportional to 86,999.69, 130,518.98 and 27,838.91

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Solution

The fourth proportional to 86,999.69, 130,518.98 and 27,838.91 is: 41,764.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,999.69 : 130,518.98 = 27,838.91 : x
  2. Step 2: Convert to fraction form
    86,999.69/130,518.98 = 27,838.91/x
  3. Step 3: Cross multiply
    86,999.69x = 130,518.98 × 27,838.91
  4. Step 4: Simplify right side
    86,999.69x = 3,633,505,345.72
  5. Step 5: Solve for x
    x = 3,633,505,345.72/86,999.69
  6. Step 6: Final answer
    x = 41,764.58

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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.