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Finding the Fourth Proportional to 522,078.30, 729,138.15 and 522,078.30

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Solution

The fourth proportional to 522,078.30, 729,138.15 and 522,078.30 is: 729,138.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,078.30 : 729,138.15 = 522,078.30 : x
  2. Step 2: Convert to fraction form
    522,078.30/729,138.15 = 522,078.30/x
  3. Step 3: Cross multiply
    522,078.30x = 729,138.15 × 522,078.30
  4. Step 4: Simplify right side
    522,078.30x = 380,667,205,817.15
  5. Step 5: Solve for x
    x = 380,667,205,817.15/522,078.30
  6. Step 6: Final answer
    x = 729,138.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.