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Finding the Fourth Proportional to 93,377.66, 128,856 and 53,085.86

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Solution

The fourth proportional to 93,377.66, 128,856 and 53,085.86 is: 73,255.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,377.66 : 128,856 = 53,085.86 : x
  2. Step 2: Convert to fraction form
    93,377.66/128,856 = 53,085.86/x
  3. Step 3: Cross multiply
    93,377.66x = 128,856 × 53,085.86
  4. Step 4: Simplify right side
    93,377.66x = 6,840,431,576.16
  5. Step 5: Solve for x
    x = 6,840,431,576.16/93,377.66
  6. Step 6: Final answer
    x = 73,255.55

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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.