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Finding the Fourth Proportional to 392,060.55, 540,961.04 and 256,293.39

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Solution

The fourth proportional to 392,060.55, 540,961.04 and 256,293.39 is: 353,630.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,060.55 : 540,961.04 = 256,293.39 : x
  2. Step 2: Convert to fraction form
    392,060.55/540,961.04 = 256,293.39/x
  3. Step 3: Cross multiply
    392,060.55x = 540,961.04 × 256,293.39
  4. Step 4: Simplify right side
    392,060.55x = 138,644,737,518.06
  5. Step 5: Solve for x
    x = 138,644,737,518.06/392,060.55
  6. Step 6: Final answer
    x = 353,630.93

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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.