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Finding the Fourth Proportional to 395,220.45, 591,518.48 and 395,220.45

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Solution

The fourth proportional to 395,220.45, 591,518.48 and 395,220.45 is: 591,518.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,220.45 : 591,518.48 = 395,220.45 : x
  2. Step 2: Convert to fraction form
    395,220.45/591,518.48 = 395,220.45/x
  3. Step 3: Cross multiply
    395,220.45x = 591,518.48 × 395,220.45
  4. Step 4: Simplify right side
    395,220.45x = 233,780,197,872.81
  5. Step 5: Solve for x
    x = 233,780,197,872.81/395,220.45
  6. Step 6: Final answer
    x = 591,518.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.