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Finding the Fourth Proportional to 663,005.80, 994,508.70 and 411,063.40

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Solution

The fourth proportional to 663,005.80, 994,508.70 and 411,063.40 is: 616,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,005.80 : 994,508.70 = 411,063.40 : x
  2. Step 2: Convert to fraction form
    663,005.80/994,508.70 = 411,063.40/x
  3. Step 3: Cross multiply
    663,005.80x = 994,508.70 × 411,063.40
  4. Step 4: Simplify right side
    663,005.80x = 408,806,127,551.58
  5. Step 5: Solve for x
    x = 408,806,127,551.58/663,005.80
  6. Step 6: Final answer
    x = 616,595.10

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Similar ratio
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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.