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Finding the Fourth Proportional to 127,761.90, 191,679.84 and 52,868.22

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Solution

The fourth proportional to 127,761.90, 191,679.84 and 52,868.22 is: 79,317.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,761.90 : 191,679.84 = 52,868.22 : x
  2. Step 2: Convert to fraction form
    127,761.90/191,679.84 = 52,868.22/x
  3. Step 3: Cross multiply
    127,761.90x = 191,679.84 × 52,868.22
  4. Step 4: Simplify right side
    127,761.90x = 10,133,771,950.68
  5. Step 5: Solve for x
    x = 10,133,771,950.68/127,761.90
  6. Step 6: Final answer
    x = 79,317.64

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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.