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Finding the Fourth Proportional to 264,386.14, 396,579.20 and 77,397.64

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Solution

The fourth proportional to 264,386.14, 396,579.20 and 77,397.64 is: 116,096.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,386.14 : 396,579.20 = 77,397.64 : x
  2. Step 2: Convert to fraction form
    264,386.14/396,579.20 = 77,397.64/x
  3. Step 3: Cross multiply
    264,386.14x = 396,579.20 × 77,397.64
  4. Step 4: Simplify right side
    264,386.14x = 30,694,294,153.09
  5. Step 5: Solve for x
    x = 30,694,294,153.09/264,386.14
  6. Step 6: Final answer
    x = 116,096.46

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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.