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Finding the Fourth Proportional to 516,170.66, 712,335.51 and 286,745.37

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Solution

The fourth proportional to 516,170.66, 712,335.51 and 286,745.37 is: 395,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,170.66 : 712,335.51 = 286,745.37 : x
  2. Step 2: Convert to fraction form
    516,170.66/712,335.51 = 286,745.37/x
  3. Step 3: Cross multiply
    516,170.66x = 712,335.51 × 286,745.37
  4. Step 4: Simplify right side
    516,170.66x = 204,258,905,632.54
  5. Step 5: Solve for x
    x = 204,258,905,632.54/516,170.66
  6. Step 6: Final answer
    x = 395,719.71

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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.