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Finding the Fourth Proportional to 61,606.65, 85,018.41 and 34,743.90

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Solution

The fourth proportional to 61,606.65, 85,018.41 and 34,743.90 is: 47,947.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,606.65 : 85,018.41 = 34,743.90 : x
  2. Step 2: Convert to fraction form
    61,606.65/85,018.41 = 34,743.90/x
  3. Step 3: Cross multiply
    61,606.65x = 85,018.41 × 34,743.90
  4. Step 4: Simplify right side
    61,606.65x = 2,953,871,135.20
  5. Step 5: Solve for x
    x = 2,953,871,135.20/61,606.65
  6. Step 6: Final answer
    x = 47,947.28

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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.