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Finding the Fourth Proportional to 543,190.40, 762,041.20 and 543,190.40

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Solution

The fourth proportional to 543,190.40, 762,041.20 and 543,190.40 is: 762,041.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,190.40 : 762,041.20 = 543,190.40 : x
  2. Step 2: Convert to fraction form
    543,190.40/762,041.20 = 543,190.40/x
  3. Step 3: Cross multiply
    543,190.40x = 762,041.20 × 543,190.40
  4. Step 4: Simplify right side
    543,190.40x = 413,933,464,244.48
  5. Step 5: Solve for x
    x = 413,933,464,244.48/543,190.40
  6. Step 6: Final answer
    x = 762,041.20

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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.