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Finding the Fourth Proportional to 114,115.56, 171,339.45 and 81,011.40

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Solution

The fourth proportional to 114,115.56, 171,339.45 and 81,011.40 is: 121,635.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,115.56 : 171,339.45 = 81,011.40 : x
  2. Step 2: Convert to fraction form
    114,115.56/171,339.45 = 81,011.40/x
  3. Step 3: Cross multiply
    114,115.56x = 171,339.45 × 81,011.40
  4. Step 4: Simplify right side
    114,115.56x = 13,880,448,719.73
  5. Step 5: Solve for x
    x = 13,880,448,719.73/114,115.56
  6. Step 6: Final answer
    x = 121,635.02

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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.