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Finding the Fourth Proportional to 644,779.40, 967,169.10 and 556,205.90

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Solution

The fourth proportional to 644,779.40, 967,169.10 and 556,205.90 is: 834,308.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,779.40 : 967,169.10 = 556,205.90 : x
  2. Step 2: Convert to fraction form
    644,779.40/967,169.10 = 556,205.90/x
  3. Step 3: Cross multiply
    644,779.40x = 967,169.10 × 556,205.90
  4. Step 4: Simplify right side
    644,779.40x = 537,945,159,717.69
  5. Step 5: Solve for x
    x = 537,945,159,717.69/644,779.40
  6. Step 6: Final answer
    x = 834,308.85

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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.