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Finding the Fourth Proportional to 290,189.16, 435,064.50 and 190,374.48

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Solution

The fourth proportional to 290,189.16, 435,064.50 and 190,374.48 is: 285,417.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,189.16 : 435,064.50 = 190,374.48 : x
  2. Step 2: Convert to fraction form
    290,189.16/435,064.50 = 190,374.48/x
  3. Step 3: Cross multiply
    290,189.16x = 435,064.50 × 190,374.48
  4. Step 4: Simplify right side
    290,189.16x = 82,825,177,953.96
  5. Step 5: Solve for x
    x = 82,825,177,953.96/290,189.16
  6. Step 6: Final answer
    x = 285,417.89

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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.