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Finding the Fourth Proportional to 530,198.83, 731,652.42 and 288,482.32

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Solution

The fourth proportional to 530,198.83, 731,652.42 and 288,482.32 is: 398,093.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,198.83 : 731,652.42 = 288,482.32 : x
  2. Step 2: Convert to fraction form
    530,198.83/731,652.42 = 288,482.32/x
  3. Step 3: Cross multiply
    530,198.83x = 731,652.42 × 288,482.32
  4. Step 4: Simplify right side
    530,198.83x = 211,068,787,555.21
  5. Step 5: Solve for x
    x = 211,068,787,555.21/530,198.83
  6. Step 6: Final answer
    x = 398,093.65

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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.