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Finding the Fourth Proportional to 398,985.98, 601,144.28 and 361,086.14

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Solution

The fourth proportional to 398,985.98, 601,144.28 and 361,086.14 is: 544,041.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,985.98 : 601,144.28 = 361,086.14 : x
  2. Step 2: Convert to fraction form
    398,985.98/601,144.28 = 361,086.14/x
  3. Step 3: Cross multiply
    398,985.98x = 601,144.28 × 361,086.14
  4. Step 4: Simplify right side
    398,985.98x = 217,064,867,648.28
  5. Step 5: Solve for x
    x = 217,064,867,648.28/398,985.98
  6. Step 6: Final answer
    x = 544,041.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.