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Finding the Fourth Proportional to 395,640.51, 545,984.01 and 214,353.69

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Solution

The fourth proportional to 395,640.51, 545,984.01 and 214,353.69 is: 295,808.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,640.51 : 545,984.01 = 214,353.69 : x
  2. Step 2: Convert to fraction form
    395,640.51/545,984.01 = 214,353.69/x
  3. Step 3: Cross multiply
    395,640.51x = 545,984.01 × 214,353.69
  4. Step 4: Simplify right side
    395,640.51x = 117,033,687,224.50
  5. Step 5: Solve for x
    x = 117,033,687,224.50/395,640.51
  6. Step 6: Final answer
    x = 295,808.15

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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.