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Finding the Fourth Proportional to 81,832.96, 112,440.08 and 65,036.80

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Solution

The fourth proportional to 81,832.96, 112,440.08 and 65,036.80 is: 89,361.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,832.96 : 112,440.08 = 65,036.80 : x
  2. Step 2: Convert to fraction form
    81,832.96/112,440.08 = 65,036.80/x
  3. Step 3: Cross multiply
    81,832.96x = 112,440.08 × 65,036.80
  4. Step 4: Simplify right side
    81,832.96x = 7,312,742,994.94
  5. Step 5: Solve for x
    x = 7,312,742,994.94/81,832.96
  6. Step 6: Final answer
    x = 89,361.83

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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.