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Finding the Fourth Proportional to 681,527.40, 940,511.64 and 395,217.48

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Solution

The fourth proportional to 681,527.40, 940,511.64 and 395,217.48 is: 545,402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,527.40 : 940,511.64 = 395,217.48 : x
  2. Step 2: Convert to fraction form
    681,527.40/940,511.64 = 395,217.48/x
  3. Step 3: Cross multiply
    681,527.40x = 940,511.64 × 395,217.48
  4. Step 4: Simplify right side
    681,527.40x = 371,706,640,271.47
  5. Step 5: Solve for x
    x = 371,706,640,271.47/681,527.40
  6. Step 6: Final answer
    x = 545,402.34

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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.