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Finding the Fourth Proportional to 319,165.50, 440,448.42 and 175,928.66

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Solution

The fourth proportional to 319,165.50, 440,448.42 and 175,928.66 is: 242,781.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,165.50 : 440,448.42 = 175,928.66 : x
  2. Step 2: Convert to fraction form
    319,165.50/440,448.42 = 175,928.66/x
  3. Step 3: Cross multiply
    319,165.50x = 440,448.42 × 175,928.66
  4. Step 4: Simplify right side
    319,165.50x = 77,487,500,329.72
  5. Step 5: Solve for x
    x = 77,487,500,329.72/319,165.50
  6. Step 6: Final answer
    x = 242,781.57

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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.