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Finding the Fourth Proportional to 113,562.64, 156,716.46 and 65,843.62

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Solution

The fourth proportional to 113,562.64, 156,716.46 and 65,843.62 is: 90,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,562.64 : 156,716.46 = 65,843.62 : x
  2. Step 2: Convert to fraction form
    113,562.64/156,716.46 = 65,843.62/x
  3. Step 3: Cross multiply
    113,562.64x = 156,716.46 × 65,843.62
  4. Step 4: Simplify right side
    113,562.64x = 10,318,779,039.99
  5. Step 5: Solve for x
    x = 10,318,779,039.99/113,562.64
  6. Step 6: Final answer
    x = 90,864.21

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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.