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Finding the Fourth Proportional to 806,063.80, 1,209,095.70 and 681,647.80

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Solution

The fourth proportional to 806,063.80, 1,209,095.70 and 681,647.80 is: 1,022,471.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,063.80 : 1,209,095.70 = 681,647.80 : x
  2. Step 2: Convert to fraction form
    806,063.80/1,209,095.70 = 681,647.80/x
  3. Step 3: Cross multiply
    806,063.80x = 1,209,095.70 × 681,647.80
  4. Step 4: Simplify right side
    806,063.80x = 824,177,423,894.46
  5. Step 5: Solve for x
    x = 824,177,423,894.46/806,063.80
  6. Step 6: Final answer
    x = 1,022,471.70

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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.