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Finding the Fourth Proportional to 59,619.80, 89,429.70 and 18,066.80

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Solution

The fourth proportional to 59,619.80, 89,429.70 and 18,066.80 is: 27,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,619.80 : 89,429.70 = 18,066.80 : x
  2. Step 2: Convert to fraction form
    59,619.80/89,429.70 = 18,066.80/x
  3. Step 3: Cross multiply
    59,619.80x = 89,429.70 × 18,066.80
  4. Step 4: Simplify right side
    59,619.80x = 1,615,708,503.96
  5. Step 5: Solve for x
    x = 1,615,708,503.96/59,619.80
  6. Step 6: Final answer
    x = 27,100.20

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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.