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Finding the Fourth Proportional to 480,657.90, 721,035.72 and 165,073.80

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Solution

The fourth proportional to 480,657.90, 721,035.72 and 165,073.80 is: 247,627.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,657.90 : 721,035.72 = 165,073.80 : x
  2. Step 2: Convert to fraction form
    480,657.90/721,035.72 = 165,073.80/x
  3. Step 3: Cross multiply
    480,657.90x = 721,035.72 × 165,073.80
  4. Step 4: Simplify right side
    480,657.90x = 119,024,106,236.14
  5. Step 5: Solve for x
    x = 119,024,106,236.14/480,657.90
  6. Step 6: Final answer
    x = 247,627.48

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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.