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Finding the Fourth Proportional to 681,527.73, 940,509.05 and 395,214.20

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Solution

The fourth proportional to 681,527.73, 940,509.05 and 395,214.20 is: 545,396.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,527.73 : 940,509.05 = 395,214.20 : x
  2. Step 2: Convert to fraction form
    681,527.73/940,509.05 = 395,214.20/x
  3. Step 3: Cross multiply
    681,527.73x = 940,509.05 × 395,214.20
  4. Step 4: Simplify right side
    681,527.73x = 371,702,525,109.89
  5. Step 5: Solve for x
    x = 371,702,525,109.89/681,527.73
  6. Step 6: Final answer
    x = 545,396.04

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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.