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Finding the Fourth Proportional to 626,990.82, 865,606.00 and 412,753.67

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Solution

The fourth proportional to 626,990.82, 865,606.00 and 412,753.67 is: 569,836.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,990.82 : 865,606.00 = 412,753.67 : x
  2. Step 2: Convert to fraction form
    626,990.82/865,606.00 = 412,753.67/x
  3. Step 3: Cross multiply
    626,990.82x = 865,606.00 × 412,753.67
  4. Step 4: Simplify right side
    626,990.82x = 357,282,054,406.15
  5. Step 5: Solve for x
    x = 357,282,054,406.15/626,990.82
  6. Step 6: Final answer
    x = 569,836.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.