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Finding the Fourth Proportional to 289,374.90, 433,997.55 and 190,230.90

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Solution

The fourth proportional to 289,374.90, 433,997.55 and 190,230.90 is: 285,303.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,374.90 : 433,997.55 = 190,230.90 : x
  2. Step 2: Convert to fraction form
    289,374.90/433,997.55 = 190,230.90/x
  3. Step 3: Cross multiply
    289,374.90x = 433,997.55 × 190,230.90
  4. Step 4: Simplify right side
    289,374.90x = 82,559,744,534.30
  5. Step 5: Solve for x
    x = 82,559,744,534.30/289,374.90
  6. Step 6: Final answer
    x = 285,303.75

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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.