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Finding the Fourth Proportional to 118,690.66, 178,035.51 and 48,569.94

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Solution

The fourth proportional to 118,690.66, 178,035.51 and 48,569.94 is: 72,854.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,690.66 : 178,035.51 = 48,569.94 : x
  2. Step 2: Convert to fraction form
    118,690.66/178,035.51 = 48,569.94/x
  3. Step 3: Cross multiply
    118,690.66x = 178,035.51 × 48,569.94
  4. Step 4: Simplify right side
    118,690.66x = 8,647,174,038.57
  5. Step 5: Solve for x
    x = 8,647,174,038.57/118,690.66
  6. Step 6: Final answer
    x = 72,854.71

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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.