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Finding the Fourth Proportional to 628,079.06, 866,379.75 and 373,415.06

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Solution

The fourth proportional to 628,079.06, 866,379.75 and 373,415.06 is: 515,093.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,079.06 : 866,379.75 = 373,415.06 : x
  2. Step 2: Convert to fraction form
    628,079.06/866,379.75 = 373,415.06/x
  3. Step 3: Cross multiply
    628,079.06x = 866,379.75 × 373,415.06
  4. Step 4: Simplify right side
    628,079.06x = 323,519,247,094.68
  5. Step 5: Solve for x
    x = 323,519,247,094.68/628,079.06
  6. Step 6: Final answer
    x = 515,093.19

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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.