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Finding the Fourth Proportional to 392,062.05, 540,963.11 and 256,294.89

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Solution

The fourth proportional to 392,062.05, 540,963.11 and 256,294.89 is: 353,633.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,062.05 : 540,963.11 = 256,294.89 : x
  2. Step 2: Convert to fraction form
    392,062.05/540,963.11 = 256,294.89/x
  3. Step 3: Cross multiply
    392,062.05x = 540,963.11 × 256,294.89
  4. Step 4: Simplify right side
    392,062.05x = 138,646,079,490.03
  5. Step 5: Solve for x
    x = 138,646,079,490.03/392,062.05
  6. Step 6: Final answer
    x = 353,633.00

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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.