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Finding the Fourth Proportional to 557,756.40, 838,384.20 and 547,258.80

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Solution

The fourth proportional to 557,756.40, 838,384.20 and 547,258.80 is: 822,604.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,756.40 : 838,384.20 = 547,258.80 : x
  2. Step 2: Convert to fraction form
    557,756.40/838,384.20 = 547,258.80/x
  3. Step 3: Cross multiply
    557,756.40x = 838,384.20 × 547,258.80
  4. Step 4: Simplify right side
    557,756.40x = 458,813,131,230.96
  5. Step 5: Solve for x
    x = 458,813,131,230.96/557,756.40
  6. Step 6: Final answer
    x = 822,604.87

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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.