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Finding the Fourth Proportional to 280,161.36, 386,569.80 and 166,994.64

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Solution

The fourth proportional to 280,161.36, 386,569.80 and 166,994.64 is: 230,421.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,161.36 : 386,569.80 = 166,994.64 : x
  2. Step 2: Convert to fraction form
    280,161.36/386,569.80 = 166,994.64/x
  3. Step 3: Cross multiply
    280,161.36x = 386,569.80 × 166,994.64
  4. Step 4: Simplify right side
    280,161.36x = 64,555,084,585.87
  5. Step 5: Solve for x
    x = 64,555,084,585.87/280,161.36
  6. Step 6: Final answer
    x = 230,421.09

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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.