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Finding the Fourth Proportional to 677,147.61, 934,474.41 and 405,227.10

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Solution

The fourth proportional to 677,147.61, 934,474.41 and 405,227.10 is: 559,219.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,147.61 : 934,474.41 = 405,227.10 : x
  2. Step 2: Convert to fraction form
    677,147.61/934,474.41 = 405,227.10/x
  3. Step 3: Cross multiply
    677,147.61x = 934,474.41 × 405,227.10
  4. Step 4: Simplify right side
    677,147.61x = 378,674,355,188.51
  5. Step 5: Solve for x
    x = 378,674,355,188.51/677,147.61
  6. Step 6: Final answer
    x = 559,219.81

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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.