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Finding the Fourth Proportional to 381,541.79, 526,419.71 and 245,654.37

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Solution

The fourth proportional to 381,541.79, 526,419.71 and 245,654.37 is: 338,933.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,541.79 : 526,419.71 = 245,654.37 : x
  2. Step 2: Convert to fraction form
    381,541.79/526,419.71 = 245,654.37/x
  3. Step 3: Cross multiply
    381,541.79x = 526,419.71 × 245,654.37
  4. Step 4: Simplify right side
    381,541.79x = 129,317,301,908.57
  5. Step 5: Solve for x
    x = 129,317,301,908.57/381,541.79
  6. Step 6: Final answer
    x = 338,933.52

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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.