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Finding the Fourth Proportional to 93,204.47, 128,581.25 and 62,978.77

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Solution

The fourth proportional to 93,204.47, 128,581.25 and 62,978.77 is: 86,883.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,204.47 : 128,581.25 = 62,978.77 : x
  2. Step 2: Convert to fraction form
    93,204.47/128,581.25 = 62,978.77/x
  3. Step 3: Cross multiply
    93,204.47x = 128,581.25 × 62,978.77
  4. Step 4: Simplify right side
    93,204.47x = 8,097,888,269.75
  5. Step 5: Solve for x
    x = 8,097,888,269.75/93,204.47
  6. Step 6: Final answer
    x = 86,883.04

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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.