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Finding the Fourth Proportional to 56,616.80, 84,903.60 and 17,160.80

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Solution

The fourth proportional to 56,616.80, 84,903.60 and 17,160.80 is: 25,734.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,616.80 : 84,903.60 = 17,160.80 : x
  2. Step 2: Convert to fraction form
    56,616.80/84,903.60 = 17,160.80/x
  3. Step 3: Cross multiply
    56,616.80x = 84,903.60 × 17,160.80
  4. Step 4: Simplify right side
    56,616.80x = 1,457,013,698.88
  5. Step 5: Solve for x
    x = 1,457,013,698.88/56,616.80
  6. Step 6: Final answer
    x = 25,734.65

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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.