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Finding the Fourth Proportional to 173,628.80, 260,443.20 and 161,187.20

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Solution

The fourth proportional to 173,628.80, 260,443.20 and 161,187.20 is: 241,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,628.80 : 260,443.20 = 161,187.20 : x
  2. Step 2: Convert to fraction form
    173,628.80/260,443.20 = 161,187.20/x
  3. Step 3: Cross multiply
    173,628.80x = 260,443.20 × 161,187.20
  4. Step 4: Simplify right side
    173,628.80x = 41,980,110,167.04
  5. Step 5: Solve for x
    x = 41,980,110,167.04/173,628.80
  6. Step 6: Final answer
    x = 241,780.80

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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.