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Finding the Fourth Proportional to 61,603.76, 85,013.07 and 34,746.18

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Solution

The fourth proportional to 61,603.76, 85,013.07 and 34,746.18 is: 47,949.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,603.76 : 85,013.07 = 34,746.18 : x
  2. Step 2: Convert to fraction form
    61,603.76/85,013.07 = 34,746.18/x
  3. Step 3: Cross multiply
    61,603.76x = 85,013.07 × 34,746.18
  4. Step 4: Simplify right side
    61,603.76x = 2,953,879,432.57
  5. Step 5: Solve for x
    x = 2,953,879,432.57/61,603.76
  6. Step 6: Final answer
    x = 47,949.67

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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.