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Finding the Fourth Proportional to 705,280.54, 973,298.76 and 399,348.85

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Solution

The fourth proportional to 705,280.54, 973,298.76 and 399,348.85 is: 551,107.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,280.54 : 973,298.76 = 399,348.85 : x
  2. Step 2: Convert to fraction form
    705,280.54/973,298.76 = 399,348.85/x
  3. Step 3: Cross multiply
    705,280.54x = 973,298.76 × 399,348.85
  4. Step 4: Simplify right side
    705,280.54x = 388,685,740,512.43
  5. Step 5: Solve for x
    x = 388,685,740,512.43/705,280.54
  6. Step 6: Final answer
    x = 551,107.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.