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Finding the Fourth Proportional to 530,597.12, 732,219.62 and 288,879.21

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Solution

The fourth proportional to 530,597.12, 732,219.62 and 288,879.21 is: 398,650.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,597.12 : 732,219.62 = 288,879.21 : x
  2. Step 2: Convert to fraction form
    530,597.12/732,219.62 = 288,879.21/x
  3. Step 3: Cross multiply
    530,597.12x = 732,219.62 × 288,879.21
  4. Step 4: Simplify right side
    530,597.12x = 211,523,023,927.70
  5. Step 5: Solve for x
    x = 211,523,023,927.70/530,597.12
  6. Step 6: Final answer
    x = 398,650.91

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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.