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Finding the Fourth Proportional to 368,780.51, 553,265.84 and 200,257.58

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Solution

The fourth proportional to 368,780.51, 553,265.84 and 200,257.58 is: 300,438.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,780.51 : 553,265.84 = 200,257.58 : x
  2. Step 2: Convert to fraction form
    368,780.51/553,265.84 = 200,257.58/x
  3. Step 3: Cross multiply
    368,780.51x = 553,265.84 × 200,257.58
  4. Step 4: Simplify right side
    368,780.51x = 110,795,678,215.07
  5. Step 5: Solve for x
    x = 110,795,678,215.07/368,780.51
  6. Step 6: Final answer
    x = 300,438.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.