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Finding the Fourth Proportional to 386,859.31, 533,904.20 and 217,094.11

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Solution

The fourth proportional to 386,859.31, 533,904.20 and 217,094.11 is: 299,611.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,859.31 : 533,904.20 = 217,094.11 : x
  2. Step 2: Convert to fraction form
    386,859.31/533,904.20 = 217,094.11/x
  3. Step 3: Cross multiply
    386,859.31x = 533,904.20 × 217,094.11
  4. Step 4: Simplify right side
    386,859.31x = 115,907,457,124.26
  5. Step 5: Solve for x
    x = 115,907,457,124.26/386,859.31
  6. Step 6: Final answer
    x = 299,611.39

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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.