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Finding the Fourth Proportional to 86,705.69, 119,194.88 and 74,561.45

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Solution

The fourth proportional to 86,705.69, 119,194.88 and 74,561.45 is: 102,500.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,705.69 : 119,194.88 = 74,561.45 : x
  2. Step 2: Convert to fraction form
    86,705.69/119,194.88 = 74,561.45/x
  3. Step 3: Cross multiply
    86,705.69x = 119,194.88 × 74,561.45
  4. Step 4: Simplify right side
    86,705.69x = 8,887,342,116.59
  5. Step 5: Solve for x
    x = 8,887,342,116.59/86,705.69
  6. Step 6: Final answer
    x = 102,500.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.