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Finding the Fourth Proportional to 1,185,324, 1,635,747 and 641,459.78

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Solution

The fourth proportional to 1,185,324, 1,635,747 and 641,459.78 is: 885,214.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,324 : 1,635,747 = 641,459.78 : x
  2. Step 2: Convert to fraction form
    1,185,324/1,635,747 = 641,459.78/x
  3. Step 3: Cross multiply
    1,185,324x = 1,635,747 × 641,459.78
  4. Step 4: Simplify right side
    1,185,324x = 1,049,265,902,576.93
  5. Step 5: Solve for x
    x = 1,049,265,902,576.93/1,185,324
  6. Step 6: Final answer
    x = 885,214.42

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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.