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Finding the Fourth Proportional to 405,846.40, 607,603.20 and 359,190.40

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Solution

The fourth proportional to 405,846.40, 607,603.20 and 359,190.40 is: 537,753.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,846.40 : 607,603.20 = 359,190.40 : x
  2. Step 2: Convert to fraction form
    405,846.40/607,603.20 = 359,190.40/x
  3. Step 3: Cross multiply
    405,846.40x = 607,603.20 × 359,190.40
  4. Step 4: Simplify right side
    405,846.40x = 218,245,236,449.28
  5. Step 5: Solve for x
    x = 218,245,236,449.28/405,846.40
  6. Step 6: Final answer
    x = 537,753.29

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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.