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Finding the Fourth Proportional to 612,190.01, 915,599.12 and 545,194.51

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Solution

The fourth proportional to 612,190.01, 915,599.12 and 545,194.51 is: 815,399.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,190.01 : 915,599.12 = 545,194.51 : x
  2. Step 2: Convert to fraction form
    612,190.01/915,599.12 = 545,194.51/x
  3. Step 3: Cross multiply
    612,190.01x = 915,599.12 × 545,194.51
  4. Step 4: Simplify right side
    612,190.01x = 499,179,608,569.86
  5. Step 5: Solve for x
    x = 499,179,608,569.86/612,190.01
  6. Step 6: Final answer
    x = 815,399.79

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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.