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Finding the Fourth Proportional to 258,896.98, 357,093.80 and 172,812.56

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Solution

The fourth proportional to 258,896.98, 357,093.80 and 172,812.56 is: 238,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,896.98 : 357,093.80 = 172,812.56 : x
  2. Step 2: Convert to fraction form
    258,896.98/357,093.80 = 172,812.56/x
  3. Step 3: Cross multiply
    258,896.98x = 357,093.80 × 172,812.56
  4. Step 4: Simplify right side
    258,896.98x = 61,710,293,738.13
  5. Step 5: Solve for x
    x = 61,710,293,738.13/258,896.98
  6. Step 6: Final answer
    x = 238,358.49

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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.