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Finding the Fourth Proportional to 521,568.40, 782,352.60 and 166,618.30

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Solution

The fourth proportional to 521,568.40, 782,352.60 and 166,618.30 is: 249,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,568.40 : 782,352.60 = 166,618.30 : x
  2. Step 2: Convert to fraction form
    521,568.40/782,352.60 = 166,618.30/x
  3. Step 3: Cross multiply
    521,568.40x = 782,352.60 × 166,618.30
  4. Step 4: Simplify right side
    521,568.40x = 130,354,260,212.58
  5. Step 5: Solve for x
    x = 130,354,260,212.58/521,568.40
  6. Step 6: Final answer
    x = 249,927.45

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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.