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Finding the Fourth Proportional to 681,590.60, 940,598.90 and 395,280.52

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Solution

The fourth proportional to 681,590.60, 940,598.90 and 395,280.52 is: 545,489.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,590.60 : 940,598.90 = 395,280.52 : x
  2. Step 2: Convert to fraction form
    681,590.60/940,598.90 = 395,280.52/x
  3. Step 3: Cross multiply
    681,590.60x = 940,598.90 × 395,280.52
  4. Step 4: Simplify right side
    681,590.60x = 371,800,422,303.43
  5. Step 5: Solve for x
    x = 371,800,422,303.43/681,590.60
  6. Step 6: Final answer
    x = 545,489.36

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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.