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Finding the Fourth Proportional to 405,291.47, 607,947.59 and 192,009.42

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Solution

The fourth proportional to 405,291.47, 607,947.59 and 192,009.42 is: 288,019.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,291.47 : 607,947.59 = 192,009.42 : x
  2. Step 2: Convert to fraction form
    405,291.47/607,947.59 = 192,009.42/x
  3. Step 3: Cross multiply
    405,291.47x = 607,947.59 × 192,009.42
  4. Step 4: Simplify right side
    405,291.47x = 116,731,664,626.32
  5. Step 5: Solve for x
    x = 116,731,664,626.32/405,291.47
  6. Step 6: Final answer
    x = 288,019.05

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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.