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Finding the Fourth Proportional to 823,673.10, 1,235,509.65 and 636,818.70

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Solution

The fourth proportional to 823,673.10, 1,235,509.65 and 636,818.70 is: 955,228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,673.10 : 1,235,509.65 = 636,818.70 : x
  2. Step 2: Convert to fraction form
    823,673.10/1,235,509.65 = 636,818.70/x
  3. Step 3: Cross multiply
    823,673.10x = 1,235,509.65 × 636,818.70
  4. Step 4: Simplify right side
    823,673.10x = 786,795,649,150.46
  5. Step 5: Solve for x
    x = 786,795,649,150.46/823,673.10
  6. Step 6: Final answer
    x = 955,228.05

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Double scale
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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.