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Finding the Fourth Proportional to 116,581.60, 174,872.40 and 91,212.40

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Solution

The fourth proportional to 116,581.60, 174,872.40 and 91,212.40 is: 136,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,581.60 : 174,872.40 = 91,212.40 : x
  2. Step 2: Convert to fraction form
    116,581.60/174,872.40 = 91,212.40/x
  3. Step 3: Cross multiply
    116,581.60x = 174,872.40 × 91,212.40
  4. Step 4: Simplify right side
    116,581.60x = 15,950,531,297.76
  5. Step 5: Solve for x
    x = 15,950,531,297.76/116,581.60
  6. Step 6: Final answer
    x = 136,818.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.