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Finding the Fourth Proportional to 324,097.10, 486,583.05 and 257,612.30

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Solution

The fourth proportional to 324,097.10, 486,583.05 and 257,612.30 is: 386,766.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,097.10 : 486,583.05 = 257,612.30 : x
  2. Step 2: Convert to fraction form
    324,097.10/486,583.05 = 257,612.30/x
  3. Step 3: Cross multiply
    324,097.10x = 486,583.05 × 257,612.30
  4. Step 4: Simplify right side
    324,097.10x = 125,349,778,651.52
  5. Step 5: Solve for x
    x = 125,349,778,651.52/324,097.10
  6. Step 6: Final answer
    x = 386,766.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.