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Finding the Fourth Proportional to 386,571.51, 533,467.08 and 216,805.64

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Solution

The fourth proportional to 386,571.51, 533,467.08 and 216,805.64 is: 299,190.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,571.51 : 533,467.08 = 216,805.64 : x
  2. Step 2: Convert to fraction form
    386,571.51/533,467.08 = 216,805.64/x
  3. Step 3: Cross multiply
    386,571.51x = 533,467.08 × 216,805.64
  4. Step 4: Simplify right side
    386,571.51x = 115,658,669,031.00
  5. Step 5: Solve for x
    x = 115,658,669,031.00/386,571.51
  6. Step 6: Final answer
    x = 299,190.88

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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.