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Finding the Fourth Proportional to 651,639.20, 977,458.80 and 541,414.40

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Solution

The fourth proportional to 651,639.20, 977,458.80 and 541,414.40 is: 812,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,639.20 : 977,458.80 = 541,414.40 : x
  2. Step 2: Convert to fraction form
    651,639.20/977,458.80 = 541,414.40/x
  3. Step 3: Cross multiply
    651,639.20x = 977,458.80 × 541,414.40
  4. Step 4: Simplify right side
    651,639.20x = 529,210,269,726.72
  5. Step 5: Solve for x
    x = 529,210,269,726.72/651,639.20
  6. Step 6: Final answer
    x = 812,121.60

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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.