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Finding the Fourth Proportional to 929,109.20, 1,393,663.80 and 929,109.20

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Solution

The fourth proportional to 929,109.20, 1,393,663.80 and 929,109.20 is: 1,393,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,109.20 : 1,393,663.80 = 929,109.20 : x
  2. Step 2: Convert to fraction form
    929,109.20/1,393,663.80 = 929,109.20/x
  3. Step 3: Cross multiply
    929,109.20x = 1,393,663.80 × 929,109.20
  4. Step 4: Simplify right side
    929,109.20x = 1,294,865,858,286.96
  5. Step 5: Solve for x
    x = 1,294,865,858,286.96/929,109.20
  6. Step 6: Final answer
    x = 1,393,663.80

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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.