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Finding the Fourth Proportional to 405,743.90, 607,233.45 and 405,743.90

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Solution

The fourth proportional to 405,743.90, 607,233.45 and 405,743.90 is: 607,233.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,743.90 : 607,233.45 = 405,743.90 : x
  2. Step 2: Convert to fraction form
    405,743.90/607,233.45 = 405,743.90/x
  3. Step 3: Cross multiply
    405,743.90x = 607,233.45 × 405,743.90
  4. Step 4: Simplify right side
    405,743.90x = 246,381,268,213.46
  5. Step 5: Solve for x
    x = 246,381,268,213.46/405,743.90
  6. Step 6: Final answer
    x = 607,233.45

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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.