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Finding the Fourth Proportional to 615,911.60, 923,867.40 and 531,930.80

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Solution

The fourth proportional to 615,911.60, 923,867.40 and 531,930.80 is: 797,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,911.60 : 923,867.40 = 531,930.80 : x
  2. Step 2: Convert to fraction form
    615,911.60/923,867.40 = 531,930.80/x
  3. Step 3: Cross multiply
    615,911.60x = 923,867.40 × 531,930.80
  4. Step 4: Simplify right side
    615,911.60x = 491,433,525,175.92
  5. Step 5: Solve for x
    x = 491,433,525,175.92/615,911.60
  6. Step 6: Final answer
    x = 797,896.20

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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.