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Finding the Fourth Proportional to 468,520.65, 702,573.21 and 215,739.90

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Solution

The fourth proportional to 468,520.65, 702,573.21 and 215,739.90 is: 323,514.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,520.65 : 702,573.21 = 215,739.90 : x
  2. Step 2: Convert to fraction form
    468,520.65/702,573.21 = 215,739.90/x
  3. Step 3: Cross multiply
    468,520.65x = 702,573.21 × 215,739.90
  4. Step 4: Simplify right side
    468,520.65x = 151,573,074,068.08
  5. Step 5: Solve for x
    x = 151,573,074,068.08/468,520.65
  6. Step 6: Final answer
    x = 323,514.18

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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.