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Finding the Fourth Proportional to 681,347.80, 940,051.80 and 394,812.52

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Solution

The fourth proportional to 681,347.80, 940,051.80 and 394,812.52 is: 544,720.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,347.80 : 940,051.80 = 394,812.52 : x
  2. Step 2: Convert to fraction form
    681,347.80/940,051.80 = 394,812.52/x
  3. Step 3: Cross multiply
    681,347.80x = 940,051.80 × 394,812.52
  4. Step 4: Simplify right side
    681,347.80x = 371,144,220,088.54
  5. Step 5: Solve for x
    x = 371,144,220,088.54/681,347.80
  6. Step 6: Final answer
    x = 544,720.66

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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.