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Finding the Fourth Proportional to 216,612.64, 324,423.13 and 132,186.93

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Solution

The fourth proportional to 216,612.64, 324,423.13 and 132,186.93 is: 197,977.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,612.64 : 324,423.13 = 132,186.93 : x
  2. Step 2: Convert to fraction form
    216,612.64/324,423.13 = 132,186.93/x
  3. Step 3: Cross multiply
    216,612.64x = 324,423.13 × 132,186.93
  4. Step 4: Simplify right side
    216,612.64x = 42,884,497,575.69
  5. Step 5: Solve for x
    x = 42,884,497,575.69/216,612.64
  6. Step 6: Final answer
    x = 197,977.82

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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.