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Finding the Fourth Proportional to 929,861.40, 1,392,167.70 and 929,861.40

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Solution

The fourth proportional to 929,861.40, 1,392,167.70 and 929,861.40 is: 1,392,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,861.40 : 1,392,167.70 = 929,861.40 : x
  2. Step 2: Convert to fraction form
    929,861.40/1,392,167.70 = 929,861.40/x
  3. Step 3: Cross multiply
    929,861.40x = 1,392,167.70 × 929,861.40
  4. Step 4: Simplify right side
    929,861.40x = 1,294,523,006,556.78
  5. Step 5: Solve for x
    x = 1,294,523,006,556.78/929,861.40
  6. Step 6: Final answer
    x = 1,392,167.70

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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.