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Finding the Fourth Proportional to 401,383.76, 554,200.16 and 258,392.88

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Solution

The fourth proportional to 401,383.76, 554,200.16 and 258,392.88 is: 356,769.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,383.76 : 554,200.16 = 258,392.88 : x
  2. Step 2: Convert to fraction form
    401,383.76/554,200.16 = 258,392.88/x
  3. Step 3: Cross multiply
    401,383.76x = 554,200.16 × 258,392.88
  4. Step 4: Simplify right side
    401,383.76x = 143,201,374,146.90
  5. Step 5: Solve for x
    x = 143,201,374,146.90/401,383.76
  6. Step 6: Final answer
    x = 356,769.23

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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.