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Finding the Fourth Proportional to 316,617.40, 475,617.30 and 223,305.40

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Solution

The fourth proportional to 316,617.40, 475,617.30 and 223,305.40 is: 335,445.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,617.40 : 475,617.30 = 223,305.40 : x
  2. Step 2: Convert to fraction form
    316,617.40/475,617.30 = 223,305.40/x
  3. Step 3: Cross multiply
    316,617.40x = 475,617.30 × 223,305.40
  4. Step 4: Simplify right side
    316,617.40x = 106,207,911,423.42
  5. Step 5: Solve for x
    x = 106,207,911,423.42/316,617.40
  6. Step 6: Final answer
    x = 335,445.59

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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.