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Finding the Fourth Proportional to 711,477.54, 981,826.11 and 389,184.82

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Solution

The fourth proportional to 711,477.54, 981,826.11 and 389,184.82 is: 537,067.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,477.54 : 981,826.11 = 389,184.82 : x
  2. Step 2: Convert to fraction form
    711,477.54/981,826.11 = 389,184.82/x
  3. Step 3: Cross multiply
    711,477.54x = 981,826.11 × 389,184.82
  4. Step 4: Simplify right side
    711,477.54x = 382,111,815,437.09
  5. Step 5: Solve for x
    x = 382,111,815,437.09/711,477.54
  6. Step 6: Final answer
    x = 537,067.99

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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.