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Finding the Fourth Proportional to 115,472.80, 173,209.20 and 96,810.40

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Solution

The fourth proportional to 115,472.80, 173,209.20 and 96,810.40 is: 145,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,472.80 : 173,209.20 = 96,810.40 : x
  2. Step 2: Convert to fraction form
    115,472.80/173,209.20 = 96,810.40/x
  3. Step 3: Cross multiply
    115,472.80x = 173,209.20 × 96,810.40
  4. Step 4: Simplify right side
    115,472.80x = 16,768,451,935.68
  5. Step 5: Solve for x
    x = 16,768,451,935.68/115,472.80
  6. Step 6: Final answer
    x = 145,215.60

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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.