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Finding the Fourth Proportional to 541,490.43, 747,335.00 and 312,003.78

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Solution

The fourth proportional to 541,490.43, 747,335.00 and 312,003.78 is: 430,610.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,490.43 : 747,335.00 = 312,003.78 : x
  2. Step 2: Convert to fraction form
    541,490.43/747,335.00 = 312,003.78/x
  3. Step 3: Cross multiply
    541,490.43x = 747,335.00 × 312,003.78
  4. Step 4: Simplify right side
    541,490.43x = 233,171,343,366.28
  5. Step 5: Solve for x
    x = 233,171,343,366.28/541,490.43
  6. Step 6: Final answer
    x = 430,610.28

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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.