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Finding the Fourth Proportional to 116,103.60, 160,240.80 and 65,136.96

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Solution

The fourth proportional to 116,103.60, 160,240.80 and 65,136.96 is: 89,899.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,103.60 : 160,240.80 = 65,136.96 : x
  2. Step 2: Convert to fraction form
    116,103.60/160,240.80 = 65,136.96/x
  3. Step 3: Cross multiply
    116,103.60x = 160,240.80 × 65,136.96
  4. Step 4: Simplify right side
    116,103.60x = 10,437,598,579.97
  5. Step 5: Solve for x
    x = 10,437,598,579.97/116,103.60
  6. Step 6: Final answer
    x = 89,899.01

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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.