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Finding the Fourth Proportional to 93,158.99, 128,561.71 and 50,719.85

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Solution

The fourth proportional to 93,158.99, 128,561.71 and 50,719.85 is: 69,994.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,158.99 : 128,561.71 = 50,719.85 : x
  2. Step 2: Convert to fraction form
    93,158.99/128,561.71 = 50,719.85/x
  3. Step 3: Cross multiply
    93,158.99x = 128,561.71 × 50,719.85
  4. Step 4: Simplify right side
    93,158.99x = 6,520,630,004.13
  5. Step 5: Solve for x
    x = 6,520,630,004.13/93,158.99
  6. Step 6: Final answer
    x = 69,994.64

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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.