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Finding the Fourth Proportional to 279,218.39, 415,669.55 and 277,557.64

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Solution

The fourth proportional to 279,218.39, 415,669.55 and 277,557.64 is: 413,197.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,218.39 : 415,669.55 = 277,557.64 : x
  2. Step 2: Convert to fraction form
    279,218.39/415,669.55 = 277,557.64/x
  3. Step 3: Cross multiply
    279,218.39x = 415,669.55 × 277,557.64
  4. Step 4: Simplify right side
    279,218.39x = 115,372,256,890.90
  5. Step 5: Solve for x
    x = 115,372,256,890.90/279,218.39
  6. Step 6: Final answer
    x = 413,197.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.