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Finding the Fourth Proportional to 60,689.20, 83,749.90 and 33,830.11

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Solution

The fourth proportional to 60,689.20, 83,749.90 and 33,830.11 is: 46,684.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,689.20 : 83,749.90 = 33,830.11 : x
  2. Step 2: Convert to fraction form
    60,689.20/83,749.90 = 33,830.11/x
  3. Step 3: Cross multiply
    60,689.20x = 83,749.90 × 33,830.11
  4. Step 4: Simplify right side
    60,689.20x = 2,833,267,941.94
  5. Step 5: Solve for x
    x = 2,833,267,941.94/60,689.20
  6. Step 6: Final answer
    x = 46,684.88

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Why These Related Problems?

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