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Finding the Fourth Proportional to 76,114.62, 114,160.59 and 19,955.70

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Solution

The fourth proportional to 76,114.62, 114,160.59 and 19,955.70 is: 29,930.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,114.62 : 114,160.59 = 19,955.70 : x
  2. Step 2: Convert to fraction form
    76,114.62/114,160.59 = 19,955.70/x
  3. Step 3: Cross multiply
    76,114.62x = 114,160.59 × 19,955.70
  4. Step 4: Simplify right side
    76,114.62x = 2,278,154,485.86
  5. Step 5: Solve for x
    x = 2,278,154,485.86/76,114.62
  6. Step 6: Final answer
    x = 29,930.58

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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.