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Finding the Fourth Proportional to 480,652.90, 721,028.22 and 165,068.80

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Solution

The fourth proportional to 480,652.90, 721,028.22 and 165,068.80 is: 247,619.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,652.90 : 721,028.22 = 165,068.80 : x
  2. Step 2: Convert to fraction form
    480,652.90/721,028.22 = 165,068.80/x
  3. Step 3: Cross multiply
    480,652.90x = 721,028.22 × 165,068.80
  4. Step 4: Simplify right side
    480,652.90x = 119,019,263,041.54
  5. Step 5: Solve for x
    x = 119,019,263,041.54/480,652.90
  6. Step 6: Final answer
    x = 247,619.98

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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.