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Finding the Fourth Proportional to 530,467.26, 732,054.15 and 288,756.78

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Solution

The fourth proportional to 530,467.26, 732,054.15 and 288,756.78 is: 398,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,467.26 : 732,054.15 = 288,756.78 : x
  2. Step 2: Convert to fraction form
    530,467.26/732,054.15 = 288,756.78/x
  3. Step 3: Cross multiply
    530,467.26x = 732,054.15 × 288,756.78
  4. Step 4: Simplify right side
    530,467.26x = 211,385,599,139.64
  5. Step 5: Solve for x
    x = 211,385,599,139.64/530,467.26
  6. Step 6: Final answer
    x = 398,489.44

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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.