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Finding the Fourth Proportional to 93,309.68, 128,777.64 and 57,492.56

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Solution

The fourth proportional to 93,309.68, 128,777.64 and 57,492.56 is: 79,346.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,309.68 : 128,777.64 = 57,492.56 : x
  2. Step 2: Convert to fraction form
    93,309.68/128,777.64 = 57,492.56/x
  3. Step 3: Cross multiply
    93,309.68x = 128,777.64 × 57,492.56
  4. Step 4: Simplify right side
    93,309.68x = 7,403,756,194.36
  5. Step 5: Solve for x
    x = 7,403,756,194.36/93,309.68
  6. Step 6: Final answer
    x = 79,346.07

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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.