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Finding the Fourth Proportional to 61,603.48, 85,015.70 and 34,745.40

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Solution

The fourth proportional to 61,603.48, 85,015.70 and 34,745.40 is: 47,950.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,603.48 : 85,015.70 = 34,745.40 : x
  2. Step 2: Convert to fraction form
    61,603.48/85,015.70 = 34,745.40/x
  3. Step 3: Cross multiply
    61,603.48x = 85,015.70 × 34,745.40
  4. Step 4: Simplify right side
    61,603.48x = 2,953,904,502.78
  5. Step 5: Solve for x
    x = 2,953,904,502.78/61,603.48
  6. Step 6: Final answer
    x = 47,950.29

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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.