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Finding the Fourth Proportional to 76,191.91, 105,345.50 and 66,733.34

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Solution

The fourth proportional to 76,191.91, 105,345.50 and 66,733.34 is: 92,267.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,191.91 : 105,345.50 = 66,733.34 : x
  2. Step 2: Convert to fraction form
    76,191.91/105,345.50 = 66,733.34/x
  3. Step 3: Cross multiply
    76,191.91x = 105,345.50 × 66,733.34
  4. Step 4: Simplify right side
    76,191.91x = 7,030,056,208.58
  5. Step 5: Solve for x
    x = 7,030,056,208.58/76,191.91
  6. Step 6: Final answer
    x = 92,267.75

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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.