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Finding the Fourth Proportional to 578,779.40, 868,169.10 and 410,817.80

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Solution

The fourth proportional to 578,779.40, 868,169.10 and 410,817.80 is: 616,226.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,779.40 : 868,169.10 = 410,817.80 : x
  2. Step 2: Convert to fraction form
    578,779.40/868,169.10 = 410,817.80/x
  3. Step 3: Cross multiply
    578,779.40x = 868,169.10 × 410,817.80
  4. Step 4: Simplify right side
    578,779.40x = 356,659,319,689.98
  5. Step 5: Solve for x
    x = 356,659,319,689.98/578,779.40
  6. Step 6: Final answer
    x = 616,226.70

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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.