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Finding the Fourth Proportional to 61,603.81, 85,013.20 and 34,746.25

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Solution

The fourth proportional to 61,603.81, 85,013.20 and 34,746.25 is: 47,949.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,603.81 : 85,013.20 = 34,746.25 : x
  2. Step 2: Convert to fraction form
    61,603.81/85,013.20 = 34,746.25/x
  3. Step 3: Cross multiply
    61,603.81x = 85,013.20 × 34,746.25
  4. Step 4: Simplify right side
    61,603.81x = 2,953,889,900.50
  5. Step 5: Solve for x
    x = 2,953,889,900.50/61,603.81
  6. Step 6: Final answer
    x = 47,949.79

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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.