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Finding the Fourth Proportional to 186,644.20, 279,966.30 and 61,985.20

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Solution

The fourth proportional to 186,644.20, 279,966.30 and 61,985.20 is: 92,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,644.20 : 279,966.30 = 61,985.20 : x
  2. Step 2: Convert to fraction form
    186,644.20/279,966.30 = 61,985.20/x
  3. Step 3: Cross multiply
    186,644.20x = 279,966.30 × 61,985.20
  4. Step 4: Simplify right side
    186,644.20x = 17,353,767,098.76
  5. Step 5: Solve for x
    x = 17,353,767,098.76/186,644.20
  6. Step 6: Final answer
    x = 92,977.80

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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.