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Finding the Fourth Proportional to 270,513.40, 405,770.10 and 73,521.40

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Solution

The fourth proportional to 270,513.40, 405,770.10 and 73,521.40 is: 110,282.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,513.40 : 405,770.10 = 73,521.40 : x
  2. Step 2: Convert to fraction form
    270,513.40/405,770.10 = 73,521.40/x
  3. Step 3: Cross multiply
    270,513.40x = 405,770.10 × 73,521.40
  4. Step 4: Simplify right side
    270,513.40x = 29,832,785,830.14
  5. Step 5: Solve for x
    x = 29,832,785,830.14/270,513.40
  6. Step 6: Final answer
    x = 110,282.10

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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.