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Finding the Fourth Proportional to 681,325.92, 940,229.82 and 395,012.16

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Solution

The fourth proportional to 681,325.92, 940,229.82 and 395,012.16 is: 545,116.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,325.92 : 940,229.82 = 395,012.16 : x
  2. Step 2: Convert to fraction form
    681,325.92/940,229.82 = 395,012.16/x
  3. Step 3: Cross multiply
    681,325.92x = 940,229.82 × 395,012.16
  4. Step 4: Simplify right side
    681,325.92x = 371,402,212,094.61
  5. Step 5: Solve for x
    x = 371,402,212,094.61/681,325.92
  6. Step 6: Final answer
    x = 545,116.81

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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.