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Finding the Fourth Proportional to 405,590.09, 607,900.34 and 189,157.28

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Solution

The fourth proportional to 405,590.09, 607,900.34 and 189,157.28 is: 283,509.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,590.09 : 607,900.34 = 189,157.28 : x
  2. Step 2: Convert to fraction form
    405,590.09/607,900.34 = 189,157.28/x
  3. Step 3: Cross multiply
    405,590.09x = 607,900.34 × 189,157.28
  4. Step 4: Simplify right side
    405,590.09x = 114,988,772,258.87
  5. Step 5: Solve for x
    x = 114,988,772,258.87/405,590.09
  6. Step 6: Final answer
    x = 283,509.82

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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.