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Finding the Fourth Proportional to 283,998.71, 391,918.19 and 156,674.30

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Solution

The fourth proportional to 283,998.71, 391,918.19 and 156,674.30 is: 216,210.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,998.71 : 391,918.19 = 156,674.30 : x
  2. Step 2: Convert to fraction form
    283,998.71/391,918.19 = 156,674.30/x
  3. Step 3: Cross multiply
    283,998.71x = 391,918.19 × 156,674.30
  4. Step 4: Simplify right side
    283,998.71x = 61,403,505,332.55
  5. Step 5: Solve for x
    x = 61,403,505,332.55/283,998.71
  6. Step 6: Final answer
    x = 216,210.51

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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.