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Finding the Fourth Proportional to 628,116.02, 866,514.21 and 373,322.42

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Solution

The fourth proportional to 628,116.02, 866,514.21 and 373,322.42 is: 515,015.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,116.02 : 866,514.21 = 373,322.42 : x
  2. Step 2: Convert to fraction form
    628,116.02/866,514.21 = 373,322.42/x
  3. Step 3: Cross multiply
    628,116.02x = 866,514.21 × 373,322.42
  4. Step 4: Simplify right side
    628,116.02x = 323,489,181,841.59
  5. Step 5: Solve for x
    x = 323,489,181,841.59/628,116.02
  6. Step 6: Final answer
    x = 515,015.02

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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.