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Finding the Fourth Proportional to 468,574.20, 702,861.30 and 291,427.20

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Solution

The fourth proportional to 468,574.20, 702,861.30 and 291,427.20 is: 437,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,574.20 : 702,861.30 = 291,427.20 : x
  2. Step 2: Convert to fraction form
    468,574.20/702,861.30 = 291,427.20/x
  3. Step 3: Cross multiply
    468,574.20x = 702,861.30 × 291,427.20
  4. Step 4: Simplify right side
    468,574.20x = 204,832,900,647.36
  5. Step 5: Solve for x
    x = 204,832,900,647.36/468,574.20
  6. Step 6: Final answer
    x = 437,140.80

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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.