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Finding the Fourth Proportional to 325,818.70, 488,752.35 and 115,429.30

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Solution

The fourth proportional to 325,818.70, 488,752.35 and 115,429.30 is: 173,152.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,818.70 : 488,752.35 = 115,429.30 : x
  2. Step 2: Convert to fraction form
    325,818.70/488,752.35 = 115,429.30/x
  3. Step 3: Cross multiply
    325,818.70x = 488,752.35 × 115,429.30
  4. Step 4: Simplify right side
    325,818.70x = 56,416,341,633.86
  5. Step 5: Solve for x
    x = 56,416,341,633.86/325,818.70
  6. Step 6: Final answer
    x = 173,152.56

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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.