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Finding the Fourth Proportional to 172,076.93, 258,279.58 and 105,646.81

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Solution

The fourth proportional to 172,076.93, 258,279.58 and 105,646.81 is: 158,571.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,076.93 : 258,279.58 = 105,646.81 : x
  2. Step 2: Convert to fraction form
    172,076.93/258,279.58 = 105,646.81/x
  3. Step 3: Cross multiply
    172,076.93x = 258,279.58 × 105,646.81
  4. Step 4: Simplify right side
    172,076.93x = 27,286,413,715.14
  5. Step 5: Solve for x
    x = 27,286,413,715.14/172,076.93
  6. Step 6: Final answer
    x = 158,571.02

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1.5x scale

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.