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Finding the Fourth Proportional to 76,908.90, 115,363.35 and 41,916.90

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Solution

The fourth proportional to 76,908.90, 115,363.35 and 41,916.90 is: 62,875.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,908.90 : 115,363.35 = 41,916.90 : x
  2. Step 2: Convert to fraction form
    76,908.90/115,363.35 = 41,916.90/x
  3. Step 3: Cross multiply
    76,908.90x = 115,363.35 × 41,916.90
  4. Step 4: Simplify right side
    76,908.90x = 4,835,674,005.62
  5. Step 5: Solve for x
    x = 4,835,674,005.62/76,908.90
  6. Step 6: Final answer
    x = 62,875.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.