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Finding the Fourth Proportional to 93,289.66, 128,743.21 and 53,010.26

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Solution

The fourth proportional to 93,289.66, 128,743.21 and 53,010.26 is: 73,156.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,289.66 : 128,743.21 = 53,010.26 : x
  2. Step 2: Convert to fraction form
    93,289.66/128,743.21 = 53,010.26/x
  3. Step 3: Cross multiply
    93,289.66x = 128,743.21 × 53,010.26
  4. Step 4: Simplify right side
    93,289.66x = 6,824,711,035.33
  5. Step 5: Solve for x
    x = 6,824,711,035.33/93,289.66
  6. Step 6: Final answer
    x = 73,156.14

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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.