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Finding the Fourth Proportional to 383,009.90, 528,161.65 and 253,903.46

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Solution

The fourth proportional to 383,009.90, 528,161.65 and 253,903.46 is: 350,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,009.90 : 528,161.65 = 253,903.46 : x
  2. Step 2: Convert to fraction form
    383,009.90/528,161.65 = 253,903.46/x
  3. Step 3: Cross multiply
    383,009.90x = 528,161.65 × 253,903.46
  4. Step 4: Simplify right side
    383,009.90x = 134,102,067,098.74
  5. Step 5: Solve for x
    x = 134,102,067,098.74/383,009.90
  6. Step 6: Final answer
    x = 350,126.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.