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Finding the Fourth Proportional to 353,491.83, 530,237.75 and 291,031.11

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Solution

The fourth proportional to 353,491.83, 530,237.75 and 291,031.11 is: 436,546.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,491.83 : 530,237.75 = 291,031.11 : x
  2. Step 2: Convert to fraction form
    353,491.83/530,237.75 = 291,031.11/x
  3. Step 3: Cross multiply
    353,491.83x = 530,237.75 × 291,031.11
  4. Step 4: Simplify right side
    353,491.83x = 154,315,679,491.25
  5. Step 5: Solve for x
    x = 154,315,679,491.25/353,491.83
  6. Step 6: Final answer
    x = 436,546.67

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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.