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Finding the Fourth Proportional to 571,542.89, 857,409.10 and 192,495.69

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Solution

The fourth proportional to 571,542.89, 857,409.10 and 192,495.69 is: 288,775.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,542.89 : 857,409.10 = 192,495.69 : x
  2. Step 2: Convert to fraction form
    571,542.89/857,409.10 = 192,495.69/x
  3. Step 3: Cross multiply
    571,542.89x = 857,409.10 × 192,495.69
  4. Step 4: Simplify right side
    571,542.89x = 165,047,555,835.54
  5. Step 5: Solve for x
    x = 165,047,555,835.54/571,542.89
  6. Step 6: Final answer
    x = 288,775.45

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Double scale
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Similar ratio
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1.5x scale

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.