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Finding the Fourth Proportional to 65,051.70, 89,744.14 and 50,686.59

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Solution

The fourth proportional to 65,051.70, 89,744.14 and 50,686.59 is: 69,926.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,051.70 : 89,744.14 = 50,686.59 : x
  2. Step 2: Convert to fraction form
    65,051.70/89,744.14 = 50,686.59/x
  3. Step 3: Cross multiply
    65,051.70x = 89,744.14 × 50,686.59
  4. Step 4: Simplify right side
    65,051.70x = 4,548,824,107.40
  5. Step 5: Solve for x
    x = 4,548,824,107.40/65,051.70
  6. Step 6: Final answer
    x = 69,926.29

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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.