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Finding the Fourth Proportional to 316,173.32, 436,329.51 and 172,933.37

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Solution

The fourth proportional to 316,173.32, 436,329.51 and 172,933.37 is: 238,653.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,173.32 : 436,329.51 = 172,933.37 : x
  2. Step 2: Convert to fraction form
    316,173.32/436,329.51 = 172,933.37/x
  3. Step 3: Cross multiply
    316,173.32x = 436,329.51 × 172,933.37
  4. Step 4: Simplify right side
    316,173.32x = 75,455,930,413.10
  5. Step 5: Solve for x
    x = 75,455,930,413.10/316,173.32
  6. Step 6: Final answer
    x = 238,653.69

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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.