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Finding the Fourth Proportional to 381,059.51, 525,885.40 and 219,924.92

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Solution

The fourth proportional to 381,059.51, 525,885.40 and 219,924.92 is: 303,509.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,059.51 : 525,885.40 = 219,924.92 : x
  2. Step 2: Convert to fraction form
    381,059.51/525,885.40 = 219,924.92/x
  3. Step 3: Cross multiply
    381,059.51x = 525,885.40 × 219,924.92
  4. Step 4: Simplify right side
    381,059.51x = 115,655,304,876.71
  5. Step 5: Solve for x
    x = 115,655,304,876.71/381,059.51
  6. Step 6: Final answer
    x = 303,509.83

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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.