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Finding the Fourth Proportional to 91,220.70, 125,883.41 and 50,935.17

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Solution

The fourth proportional to 91,220.70, 125,883.41 and 50,935.17 is: 70,289.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,220.70 : 125,883.41 = 50,935.17 : x
  2. Step 2: Convert to fraction form
    91,220.70/125,883.41 = 50,935.17/x
  3. Step 3: Cross multiply
    91,220.70x = 125,883.41 × 50,935.17
  4. Step 4: Simplify right side
    91,220.70x = 6,411,892,633.85
  5. Step 5: Solve for x
    x = 6,411,892,633.85/91,220.70
  6. Step 6: Final answer
    x = 70,289.89

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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.