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Finding the Fourth Proportional to 127,245.70, 190,868.55 and 117,622.90

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Solution

The fourth proportional to 127,245.70, 190,868.55 and 117,622.90 is: 176,434.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,245.70 : 190,868.55 = 117,622.90 : x
  2. Step 2: Convert to fraction form
    127,245.70/190,868.55 = 117,622.90/x
  3. Step 3: Cross multiply
    127,245.70x = 190,868.55 × 117,622.90
  4. Step 4: Simplify right side
    127,245.70x = 22,450,512,369.80
  5. Step 5: Solve for x
    x = 22,450,512,369.80/127,245.70
  6. Step 6: Final answer
    x = 176,434.35

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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.