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Finding the Fourth Proportional to 59,871.12, 89,806.80 and 18,318

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Solution

The fourth proportional to 59,871.12, 89,806.80 and 18,318 is: 27,477.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,871.12 : 89,806.80 = 18,318 : x
  2. Step 2: Convert to fraction form
    59,871.12/89,806.80 = 18,318/x
  3. Step 3: Cross multiply
    59,871.12x = 89,806.80 × 18,318
  4. Step 4: Simplify right side
    59,871.12x = 1,645,080,962.40
  5. Step 5: Solve for x
    x = 1,645,080,962.40/59,871.12
  6. Step 6: Final answer
    x = 27,477.04

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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.