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Finding the Fourth Proportional to 236,315.44, 354,369.12 and 86,516.80

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Solution

The fourth proportional to 236,315.44, 354,369.12 and 86,516.80 is: 129,737.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,315.44 : 354,369.12 = 86,516.80 : x
  2. Step 2: Convert to fraction form
    236,315.44/354,369.12 = 86,516.80/x
  3. Step 3: Cross multiply
    236,315.44x = 354,369.12 × 86,516.80
  4. Step 4: Simplify right side
    236,315.44x = 30,658,882,281.22
  5. Step 5: Solve for x
    x = 30,658,882,281.22/236,315.44
  6. Step 6: Final answer
    x = 129,737.11

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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.