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Finding the Fourth Proportional to 392,561.10, 550,829.70 and 392,561.10

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Solution

The fourth proportional to 392,561.10, 550,829.70 and 392,561.10 is: 550,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,561.10 : 550,829.70 = 392,561.10 : x
  2. Step 2: Convert to fraction form
    392,561.10/550,829.70 = 392,561.10/x
  3. Step 3: Cross multiply
    392,561.10x = 550,829.70 × 392,561.10
  4. Step 4: Simplify right side
    392,561.10x = 216,234,312,944.67
  5. Step 5: Solve for x
    x = 216,234,312,944.67/392,561.10
  6. Step 6: Final answer
    x = 550,829.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.