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Finding the Fourth Proportional to 186,401.31, 279,533.91 and 68,037.63

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Solution

The fourth proportional to 186,401.31, 279,533.91 and 68,037.63 is: 102,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,401.31 : 279,533.91 = 68,037.63 : x
  2. Step 2: Convert to fraction form
    186,401.31/279,533.91 = 68,037.63/x
  3. Step 3: Cross multiply
    186,401.31x = 279,533.91 × 68,037.63
  4. Step 4: Simplify right side
    186,401.31x = 19,018,824,741.03
  5. Step 5: Solve for x
    x = 19,018,824,741.03/186,401.31
  6. Step 6: Final answer
    x = 102,031.60

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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.