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Finding the Fourth Proportional to 374,475.20, 561,712.80 and 356,043.20

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Solution

The fourth proportional to 374,475.20, 561,712.80 and 356,043.20 is: 534,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,475.20 : 561,712.80 = 356,043.20 : x
  2. Step 2: Convert to fraction form
    374,475.20/561,712.80 = 356,043.20/x
  3. Step 3: Cross multiply
    374,475.20x = 561,712.80 × 356,043.20
  4. Step 4: Simplify right side
    374,475.20x = 199,994,022,792.96
  5. Step 5: Solve for x
    x = 199,994,022,792.96/374,475.20
  6. Step 6: Final answer
    x = 534,064.80

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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.