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Finding the Fourth Proportional to 363,930.06, 546,064.18 and 139,216.22

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Solution

The fourth proportional to 363,930.06, 546,064.18 and 139,216.22 is: 208,889.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,930.06 : 546,064.18 = 139,216.22 : x
  2. Step 2: Convert to fraction form
    363,930.06/546,064.18 = 139,216.22/x
  3. Step 3: Cross multiply
    363,930.06x = 546,064.18 × 139,216.22
  4. Step 4: Simplify right side
    363,930.06x = 76,020,991,017.00
  5. Step 5: Solve for x
    x = 76,020,991,017.00/363,930.06
  6. Step 6: Final answer
    x = 208,889.01

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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.