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Finding the Fourth Proportional to 76,904.52, 106,130.78 and 44,636.72

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Solution

The fourth proportional to 76,904.52, 106,130.78 and 44,636.72 is: 61,600.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,904.52 : 106,130.78 = 44,636.72 : x
  2. Step 2: Convert to fraction form
    76,904.52/106,130.78 = 44,636.72/x
  3. Step 3: Cross multiply
    76,904.52x = 106,130.78 × 44,636.72
  4. Step 4: Simplify right side
    76,904.52x = 4,737,329,156.40
  5. Step 5: Solve for x
    x = 4,737,329,156.40/76,904.52
  6. Step 6: Final answer
    x = 61,600.14

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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.