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Finding the Fourth Proportional to 243,628.16, 336,205.32 and 136,197.68

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Solution

The fourth proportional to 243,628.16, 336,205.32 and 136,197.68 is: 187,951.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,628.16 : 336,205.32 = 136,197.68 : x
  2. Step 2: Convert to fraction form
    243,628.16/336,205.32 = 136,197.68/x
  3. Step 3: Cross multiply
    243,628.16x = 336,205.32 × 136,197.68
  4. Step 4: Simplify right side
    243,628.16x = 45,790,384,587.66
  5. Step 5: Solve for x
    x = 45,790,384,587.66/243,628.16
  6. Step 6: Final answer
    x = 187,951.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.