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Finding the Fourth Proportional to 186,438.65, 257,285.77 and 101,553.89

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Solution

The fourth proportional to 186,438.65, 257,285.77 and 101,553.89 is: 140,144.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,438.65 : 257,285.77 = 101,553.89 : x
  2. Step 2: Convert to fraction form
    186,438.65/257,285.77 = 101,553.89/x
  3. Step 3: Cross multiply
    186,438.65x = 257,285.77 × 101,553.89
  4. Step 4: Simplify right side
    186,438.65x = 26,128,369,244.83
  5. Step 5: Solve for x
    x = 26,128,369,244.83/186,438.65
  6. Step 6: Final answer
    x = 140,144.60

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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.