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Finding the Fourth Proportional to 257,644.79, 355,553.31 and 192,999.50

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Solution

The fourth proportional to 257,644.79, 355,553.31 and 192,999.50 is: 266,341.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,644.79 : 355,553.31 = 192,999.50 : x
  2. Step 2: Convert to fraction form
    257,644.79/355,553.31 = 192,999.50/x
  3. Step 3: Cross multiply
    257,644.79x = 355,553.31 × 192,999.50
  4. Step 4: Simplify right side
    257,644.79x = 68,621,609,275.58
  5. Step 5: Solve for x
    x = 68,621,609,275.58/257,644.79
  6. Step 6: Final answer
    x = 266,341.93

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1.5x scale

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.