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Finding the Fourth Proportional to 505,615.77, 697,568.46 and 298,840.79

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Solution

The fourth proportional to 505,615.77, 697,568.46 and 298,840.79 is: 412,293.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,615.77 : 697,568.46 = 298,840.79 : x
  2. Step 2: Convert to fraction form
    505,615.77/697,568.46 = 298,840.79/x
  3. Step 3: Cross multiply
    505,615.77x = 697,568.46 × 298,840.79
  4. Step 4: Simplify right side
    505,615.77x = 208,461,910,288.75
  5. Step 5: Solve for x
    x = 208,461,910,288.75/505,615.77
  6. Step 6: Final answer
    x = 412,293.13

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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.