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Finding the Fourth Proportional to 93,090.92, 128,468.68 and 50,651.06

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Solution

The fourth proportional to 93,090.92, 128,468.68 and 50,651.06 is: 69,900.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,090.92 : 128,468.68 = 50,651.06 : x
  2. Step 2: Convert to fraction form
    93,090.92/128,468.68 = 50,651.06/x
  3. Step 3: Cross multiply
    93,090.92x = 128,468.68 × 50,651.06
  4. Step 4: Simplify right side
    93,090.92x = 6,507,074,818.80
  5. Step 5: Solve for x
    x = 6,507,074,818.80/93,090.92
  6. Step 6: Final answer
    x = 69,900.21

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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.