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Finding the Fourth Proportional to 561,377.80, 844,140.30 and 470,139.40

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Solution

The fourth proportional to 561,377.80, 844,140.30 and 470,139.40 is: 706,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,377.80 : 844,140.30 = 470,139.40 : x
  2. Step 2: Convert to fraction form
    561,377.80/844,140.30 = 470,139.40/x
  3. Step 3: Cross multiply
    561,377.80x = 844,140.30 × 470,139.40
  4. Step 4: Simplify right side
    561,377.80x = 396,863,614,157.82
  5. Step 5: Solve for x
    x = 396,863,614,157.82/561,377.80
  6. Step 6: Final answer
    x = 706,945.69

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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.