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Finding the Fourth Proportional to 93,159.68, 139,731.84 and 30,809.60

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Solution

The fourth proportional to 93,159.68, 139,731.84 and 30,809.60 is: 46,211.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,159.68 : 139,731.84 = 30,809.60 : x
  2. Step 2: Convert to fraction form
    93,159.68/139,731.84 = 30,809.60/x
  3. Step 3: Cross multiply
    93,159.68x = 139,731.84 × 30,809.60
  4. Step 4: Simplify right side
    93,159.68x = 4,305,082,097.66
  5. Step 5: Solve for x
    x = 4,305,082,097.66/93,159.68
  6. Step 6: Final answer
    x = 46,211.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.