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Finding the Fourth Proportional to 43,506.66, 65,209.77 and 19,778.67

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Solution

The fourth proportional to 43,506.66, 65,209.77 and 19,778.67 is: 29,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,506.66 : 65,209.77 = 19,778.67 : x
  2. Step 2: Convert to fraction form
    43,506.66/65,209.77 = 19,778.67/x
  3. Step 3: Cross multiply
    43,506.66x = 65,209.77 × 19,778.67
  4. Step 4: Simplify right side
    43,506.66x = 1,289,762,521.61
  5. Step 5: Solve for x
    x = 1,289,762,521.61/43,506.66
  6. Step 6: Final answer
    x = 29,645.17

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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.