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Finding the Fourth Proportional to 334,339.18, 501,512.02 and 85,021.18

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Solution

The fourth proportional to 334,339.18, 501,512.02 and 85,021.18 is: 127,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,339.18 : 501,512.02 = 85,021.18 : x
  2. Step 2: Convert to fraction form
    334,339.18/501,512.02 = 85,021.18/x
  3. Step 3: Cross multiply
    334,339.18x = 501,512.02 × 85,021.18
  4. Step 4: Simplify right side
    334,339.18x = 42,639,143,724.58
  5. Step 5: Solve for x
    x = 42,639,143,724.58/334,339.18
  6. Step 6: Final answer
    x = 127,532.60

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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.