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Finding the Fourth Proportional to 615,601.40, 921,846.90 and 404,094.20

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Solution

The fourth proportional to 615,601.40, 921,846.90 and 404,094.20 is: 605,120.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,601.40 : 921,846.90 = 404,094.20 : x
  2. Step 2: Convert to fraction form
    615,601.40/921,846.90 = 404,094.20/x
  3. Step 3: Cross multiply
    615,601.40x = 921,846.90 × 404,094.20
  4. Step 4: Simplify right side
    615,601.40x = 372,512,985,577.98
  5. Step 5: Solve for x
    x = 372,512,985,577.98/615,601.40
  6. Step 6: Final answer
    x = 605,120.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.