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Finding the Fourth Proportional to 543,651.40, 815,574.30 and 228,140.20

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Solution

The fourth proportional to 543,651.40, 815,574.30 and 228,140.20 is: 342,251.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,651.40 : 815,574.30 = 228,140.20 : x
  2. Step 2: Convert to fraction form
    543,651.40/815,574.30 = 228,140.20/x
  3. Step 3: Cross multiply
    543,651.40x = 815,574.30 × 228,140.20
  4. Step 4: Simplify right side
    543,651.40x = 186,065,283,916.86
  5. Step 5: Solve for x
    x = 186,065,283,916.86/543,651.40
  6. Step 6: Final answer
    x = 342,251.09

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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.