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Finding the Fourth Proportional to 530,770.05, 732,467.39 and 289,053.72

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Solution

The fourth proportional to 530,770.05, 732,467.39 and 289,053.72 is: 398,896.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,770.05 : 732,467.39 = 289,053.72 : x
  2. Step 2: Convert to fraction form
    530,770.05/732,467.39 = 289,053.72/x
  3. Step 3: Cross multiply
    530,770.05x = 732,467.39 × 289,053.72
  4. Step 4: Simplify right side
    530,770.05x = 211,722,422,412.92
  5. Step 5: Solve for x
    x = 211,722,422,412.92/530,770.05
  6. Step 6: Final answer
    x = 398,896.70

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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.