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Finding the Fourth Proportional to 415,918.76, 573,290.82 and 325,114.44

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Solution

The fourth proportional to 415,918.76, 573,290.82 and 325,114.44 is: 448,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,918.76 : 573,290.82 = 325,114.44 : x
  2. Step 2: Convert to fraction form
    415,918.76/573,290.82 = 325,114.44/x
  3. Step 3: Cross multiply
    415,918.76x = 573,290.82 × 325,114.44
  4. Step 4: Simplify right side
    415,918.76x = 186,385,123,901.44
  5. Step 5: Solve for x
    x = 186,385,123,901.44/415,918.76
  6. Step 6: Final answer
    x = 448,128.68

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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.