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Finding the Fourth Proportional to 681,659.95, 940,345.02 and 520,234.75

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Solution

The fourth proportional to 681,659.95, 940,345.02 and 520,234.75 is: 717,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,659.95 : 940,345.02 = 520,234.75 : x
  2. Step 2: Convert to fraction form
    681,659.95/940,345.02 = 520,234.75/x
  3. Step 3: Cross multiply
    681,659.95x = 940,345.02 × 520,234.75
  4. Step 4: Simplify right side
    681,659.95x = 489,200,156,393.45
  5. Step 5: Solve for x
    x = 489,200,156,393.45/681,659.95
  6. Step 6: Final answer
    x = 717,660.11

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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.