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Finding the Fourth Proportional to 61,152.76, 84,312.68 and 39,604.43

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Solution

The fourth proportional to 61,152.76, 84,312.68 and 39,604.43 is: 54,603.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,152.76 : 84,312.68 = 39,604.43 : x
  2. Step 2: Convert to fraction form
    61,152.76/84,312.68 = 39,604.43/x
  3. Step 3: Cross multiply
    61,152.76x = 84,312.68 × 39,604.43
  4. Step 4: Simplify right side
    61,152.76x = 3,339,155,633.17
  5. Step 5: Solve for x
    x = 3,339,155,633.17/61,152.76
  6. Step 6: Final answer
    x = 54,603.52

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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.