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Finding the Fourth Proportional to 91,778.81, 137,668.21 and 32,616.81

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Solution

The fourth proportional to 91,778.81, 137,668.21 and 32,616.81 is: 48,925.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,778.81 : 137,668.21 = 32,616.81 : x
  2. Step 2: Convert to fraction form
    91,778.81/137,668.21 = 32,616.81/x
  3. Step 3: Cross multiply
    91,778.81x = 137,668.21 × 32,616.81
  4. Step 4: Simplify right side
    91,778.81x = 4,490,297,767.07
  5. Step 5: Solve for x
    x = 4,490,297,767.07/91,778.81
  6. Step 6: Final answer
    x = 48,925.22

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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.