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Finding the Fourth Proportional to 93,108.71, 128,484.42 and 52,269.81

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Solution

The fourth proportional to 93,108.71, 128,484.42 and 52,269.81 is: 72,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,108.71 : 128,484.42 = 52,269.81 : x
  2. Step 2: Convert to fraction form
    93,108.71/128,484.42 = 52,269.81/x
  3. Step 3: Cross multiply
    93,108.71x = 128,484.42 × 52,269.81
  4. Step 4: Simplify right side
    93,108.71x = 6,715,856,221.36
  5. Step 5: Solve for x
    x = 6,715,856,221.36/93,108.71
  6. Step 6: Final answer
    x = 72,129.20

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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.