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Finding the Fourth Proportional to 59,638.80, 89,458.20 and 18,080.40

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Solution

The fourth proportional to 59,638.80, 89,458.20 and 18,080.40 is: 27,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,638.80 : 89,458.20 = 18,080.40 : x
  2. Step 2: Convert to fraction form
    59,638.80/89,458.20 = 18,080.40/x
  3. Step 3: Cross multiply
    59,638.80x = 89,458.20 × 18,080.40
  4. Step 4: Simplify right side
    59,638.80x = 1,617,440,039.28
  5. Step 5: Solve for x
    x = 1,617,440,039.28/59,638.80
  6. Step 6: Final answer
    x = 27,120.60

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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.