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Finding the Fourth Proportional to 256,930.58, 385,528.76 and 186,434.43

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Solution

The fourth proportional to 256,930.58, 385,528.76 and 186,434.43 is: 279,748.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,930.58 : 385,528.76 = 186,434.43 : x
  2. Step 2: Convert to fraction form
    256,930.58/385,528.76 = 186,434.43/x
  3. Step 3: Cross multiply
    256,930.58x = 385,528.76 × 186,434.43
  4. Step 4: Simplify right side
    256,930.58x = 71,875,837,242.02
  5. Step 5: Solve for x
    x = 71,875,837,242.02/256,930.58
  6. Step 6: Final answer
    x = 279,748.08

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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.