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Finding the Fourth Proportional to 626,866.84, 865,069.50 and 354,927.16

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Solution

The fourth proportional to 626,866.84, 865,069.50 and 354,927.16 is: 489,795.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,866.84 : 865,069.50 = 354,927.16 : x
  2. Step 2: Convert to fraction form
    626,866.84/865,069.50 = 354,927.16/x
  3. Step 3: Cross multiply
    626,866.84x = 865,069.50 × 354,927.16
  4. Step 4: Simplify right side
    626,866.84x = 307,036,660,837.62
  5. Step 5: Solve for x
    x = 307,036,660,837.62/626,866.84
  6. Step 6: Final answer
    x = 489,795.67

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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.