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Finding the Fourth Proportional to 93,346.63, 128,716.49 and 63,079.46

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Solution

The fourth proportional to 93,346.63, 128,716.49 and 63,079.46 is: 86,980.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,346.63 : 128,716.49 = 63,079.46 : x
  2. Step 2: Convert to fraction form
    93,346.63/128,716.49 = 63,079.46/x
  3. Step 3: Cross multiply
    93,346.63x = 128,716.49 × 63,079.46
  4. Step 4: Simplify right side
    93,346.63x = 8,119,366,679.10
  5. Step 5: Solve for x
    x = 8,119,366,679.10/93,346.63
  6. Step 6: Final answer
    x = 86,980.83

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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.