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Finding the Fourth Proportional to 186,553.83, 257,485.82 and 118,557.54

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Solution

The fourth proportional to 186,553.83, 257,485.82 and 118,557.54 is: 163,635.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,553.83 : 257,485.82 = 118,557.54 : x
  2. Step 2: Convert to fraction form
    186,553.83/257,485.82 = 118,557.54/x
  3. Step 3: Cross multiply
    186,553.83x = 257,485.82 × 118,557.54
  4. Step 4: Simplify right side
    186,553.83x = 30,526,885,404.08
  5. Step 5: Solve for x
    x = 30,526,885,404.08/186,553.83
  6. Step 6: Final answer
    x = 163,635.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.