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Finding the Fourth Proportional to 1,566,978.45, 2,350,905.08 and 768,286.05

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Solution

The fourth proportional to 1,566,978.45, 2,350,905.08 and 768,286.05 is: 1,152,643.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566,978.45 : 2,350,905.08 = 768,286.05 : x
  2. Step 2: Convert to fraction form
    1,566,978.45/2,350,905.08 = 768,286.05/x
  3. Step 3: Cross multiply
    1,566,978.45x = 2,350,905.08 × 768,286.05
  4. Step 4: Simplify right side
    1,566,978.45x = 1,806,167,573,996.70
  5. Step 5: Solve for x
    x = 1,806,167,573,996.70/1,566,978.45
  6. Step 6: Final answer
    x = 1,152,643.53

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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.