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Finding the Fourth Proportional to 386,207.19, 532,936.53 and 216,408.51

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Solution

The fourth proportional to 386,207.19, 532,936.53 and 216,408.51 is: 298,627.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,207.19 : 532,936.53 = 216,408.51 : x
  2. Step 2: Convert to fraction form
    386,207.19/532,936.53 = 216,408.51/x
  3. Step 3: Cross multiply
    386,207.19x = 532,936.53 × 216,408.51
  4. Step 4: Simplify right side
    386,207.19x = 115,332,000,381.87
  5. Step 5: Solve for x
    x = 115,332,000,381.87/386,207.19
  6. Step 6: Final answer
    x = 298,627.27

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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.