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Finding the Fourth Proportional to 65,901.90, 90,907.47 and 41,695.38

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Solution

The fourth proportional to 65,901.90, 90,907.47 and 41,695.38 is: 57,516.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,901.90 : 90,907.47 = 41,695.38 : x
  2. Step 2: Convert to fraction form
    65,901.90/90,907.47 = 41,695.38/x
  3. Step 3: Cross multiply
    65,901.90x = 90,907.47 × 41,695.38
  4. Step 4: Simplify right side
    65,901.90x = 3,790,421,506.49
  5. Step 5: Solve for x
    x = 3,790,421,506.49/65,901.90
  6. Step 6: Final answer
    x = 57,516.12

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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.