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Finding the Fourth Proportional to 93,693.66, 129,359.62 and 55,465.50

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Solution

The fourth proportional to 93,693.66, 129,359.62 and 55,465.50 is: 76,579.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,693.66 : 129,359.62 = 55,465.50 : x
  2. Step 2: Convert to fraction form
    93,693.66/129,359.62 = 55,465.50/x
  3. Step 3: Cross multiply
    93,693.66x = 129,359.62 × 55,465.50
  4. Step 4: Simplify right side
    93,693.66x = 7,174,996,245.55
  5. Step 5: Solve for x
    x = 7,174,996,245.55/93,693.66
  6. Step 6: Final answer
    x = 76,579.32

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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.