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Finding the Fourth Proportional to 659,885.10, 989,730.45 and 186,618.30

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Solution

The fourth proportional to 659,885.10, 989,730.45 and 186,618.30 is: 279,899.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,885.10 : 989,730.45 = 186,618.30 : x
  2. Step 2: Convert to fraction form
    659,885.10/989,730.45 = 186,618.30/x
  3. Step 3: Cross multiply
    659,885.10x = 989,730.45 × 186,618.30
  4. Step 4: Simplify right side
    659,885.10x = 184,701,814,037.24
  5. Step 5: Solve for x
    x = 184,701,814,037.24/659,885.10
  6. Step 6: Final answer
    x = 279,899.96

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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.