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Finding the Fourth Proportional to 629,879.40, 944,819.10 and 517,686.30

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Solution

The fourth proportional to 629,879.40, 944,819.10 and 517,686.30 is: 776,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,879.40 : 944,819.10 = 517,686.30 : x
  2. Step 2: Convert to fraction form
    629,879.40/944,819.10 = 517,686.30/x
  3. Step 3: Cross multiply
    629,879.40x = 944,819.10 × 517,686.30
  4. Step 4: Simplify right side
    629,879.40x = 489,119,904,048.33
  5. Step 5: Solve for x
    x = 489,119,904,048.33/629,879.40
  6. Step 6: Final answer
    x = 776,529.45

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Double scale
Find fourth proportional to 629,880.40, 944,820.60 and 517,687.30
Similar ratio
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1.5x scale

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.