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Finding the Fourth Proportional to 374,865.40, 562,427.70 and 361,905.40

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Solution

The fourth proportional to 374,865.40, 562,427.70 and 361,905.40 is: 542,983.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,865.40 : 562,427.70 = 361,905.40 : x
  2. Step 2: Convert to fraction form
    374,865.40/562,427.70 = 361,905.40/x
  3. Step 3: Cross multiply
    374,865.40x = 562,427.70 × 361,905.40
  4. Step 4: Simplify right side
    374,865.40x = 203,545,621,739.58
  5. Step 5: Solve for x
    x = 203,545,621,739.58/374,865.40
  6. Step 6: Final answer
    x = 542,983.22

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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.