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Finding the Fourth Proportional to 471,244.20, 707,211.90 and 313,420.20

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Solution

The fourth proportional to 471,244.20, 707,211.90 and 313,420.20 is: 470,360.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,244.20 : 707,211.90 = 313,420.20 : x
  2. Step 2: Convert to fraction form
    471,244.20/707,211.90 = 313,420.20/x
  3. Step 3: Cross multiply
    471,244.20x = 707,211.90 × 313,420.20
  4. Step 4: Simplify right side
    471,244.20x = 221,654,495,140.38
  5. Step 5: Solve for x
    x = 221,654,495,140.38/471,244.20
  6. Step 6: Final answer
    x = 470,360.16

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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.