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Finding the Fourth Proportional to 530,787.09, 732,481.08 and 289,073.70

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Solution

The fourth proportional to 530,787.09, 732,481.08 and 289,073.70 is: 398,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,787.09 : 732,481.08 = 289,073.70 : x
  2. Step 2: Convert to fraction form
    530,787.09/732,481.08 = 289,073.70/x
  3. Step 3: Cross multiply
    530,787.09x = 732,481.08 × 289,073.70
  4. Step 4: Simplify right side
    530,787.09x = 211,741,015,975.60
  5. Step 5: Solve for x
    x = 211,741,015,975.60/530,787.09
  6. Step 6: Final answer
    x = 398,918.93

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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.