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Finding the Fourth Proportional to 319,245.51, 440,578.65 and 176,005.33

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Solution

The fourth proportional to 319,245.51, 440,578.65 and 176,005.33 is: 242,898.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,245.51 : 440,578.65 = 176,005.33 : x
  2. Step 2: Convert to fraction form
    319,245.51/440,578.65 = 176,005.33/x
  3. Step 3: Cross multiply
    319,245.51x = 440,578.65 × 176,005.33
  4. Step 4: Simplify right side
    319,245.51x = 77,544,190,684.20
  5. Step 5: Solve for x
    x = 77,544,190,684.20/319,245.51
  6. Step 6: Final answer
    x = 242,898.30

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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.